Answers
Answer:
[Protein, Molecule, Structure, Trait, Variation]
Each offspring receives two copies or variations of each gene, one from their mother and one from their father. Each offspring can inherit a different combination of gene versions, so siblings can have different traits from each other and from their parents. The girl on the right has straight hair, whereas the girl on her left, has curlier hair. A gene code for a specific protein that's involved in a traits expression. In the structure of a cell, the proteins do much of the chemical work inside the cell, so they largely determine the traits and whose they are. Another thing to remember is genes are also made up of molecules. Thin strands twisted around each other like a spiral staircase.
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Try to use the information I provided above...
GL.
The differences that occur at the molecular level or in the genes, will result in changes in the proteins which the genes code for bringing about variation in traits.
What is variation?Variation refers to the changes that occur between individuals of the same species due to environmental or genetic factors.
The basis for variation is differences that occur at the molecular level.
The genes are regions of the DNA which code for a particular trait.
The DNA is composed of chains of polynucleotide molecules.
When differences occur at the molecular level or in the genes, the proteins which the genes code for will have differences in structure.
Thus, the individuals will show variation as in the case of the two sisters who show variation in height and hair structure.
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Related Questions
How is the position of each of the following parts of a plant related to its function?
A.Stigma
B. Petal
C. anther
Answers
B. The petals are the most prominent part of a flower structure, owing to their vivid color and sometimes scent.
C. The anther produces the male séx cells of the plant.
ASAP PLS!!! LOTS OF POINTS
Compare the two graphs.
1. What conclusion can you draw about the fur color of wolves that live in these two
very different habitats? Use evidence from the graphs to support your answer. 4
points
2. What advantage might the difference in fur color have? 2 points
Answers
Answer:
Based on the graph, we can draw the following conclusions:
The graph compares the fur color of wolves that live in a forested habitat (black bars) and those that live in a tundra habitat (gray bars). The forested habitat wolves have mainly gray and black fur, while the tundra habitat wolves have mainly white fur.
This suggests that wolves that live in different habitats have adapted to blend in with their surroundings to help them hunt or avoid predators. The wolves in the forested habitat are better camouflaged with darker fur, while those in the tundra habitat are better camouflaged with lighter fur.
The difference in fur color provides an advantage for wolves because it helps them survive in their respective environments. Wolves with better camouflage are less likely to be seen by their prey or predators, making it easier for them to hunt or avoid danger.
In summary, the graph shows that wolves that live in different habitats have adapted to their surroundings by changing their fur color, which provides them with an advantage for survival in their environments.
Explanation:
Determine A scientist collects the data above using litmus paper. Blue litmus paper is a type of pH indicator that turns red when placed in an acidic solution . Red litmus paper is an indicator that turns blue when placed in a basic solution. Neutral solutions cause no change in either color of litmus paper . Hypothesize if each solution is acidic, basic, or neutral. Support your conclusions with evidence.
PLEASE ANSWER ASAP
Answers
Answer:
In an acidic or neutral solution, red litmus paper remains red. In an alkaline solution, red litmus paper turns blue. When an alkaline compound dissolves in water, it produces hydroxide ions, which cause the solution to become alkaline.
Explanation:
In the diagram below, what part of the excretory system is labeled B?
A-
A. Kidney
OB. Ureter
OC. Urethra
OD. Bladder
B.
D
Answers
Option(B) Ureter is the correct option.
The ureter is a vital part of the urinary system in humans. It is a muscular tube that connects the kidneys to the urinary bladder. Each human has two ureters, one attached to each kidney, and they play a crucial role in the transportation of urine from the kidneys to the bladder.
The primary function of the ureter is to carry urine that is produced in the kidneys to the urinary bladder for storage before it is eliminated from the body through urination. The ureters accomplish this by using peristalsis, a wave-like muscular contraction, to propel urine along their length.
The ureters have a complex anatomical course. They originate from the renal pelvis, which is the funnel-shaped structure that collects urine from the kidneys. From there, they extend downward, crossing over the brim of the pelvis and passing behind the peritoneum, the membrane lining the abdominal cavity.
The efficient functioning of the ureters is essential for the proper elimination of waste products and maintenance of fluid balance in the body. Any obstruction or abnormality in the ureters can lead to conditions like kidney stones, urinary tract infections, or urinary reflux.
In summary, the ureters are muscular tubes that transport urine from the kidneys to the urinary bladder. They rely on peristaltic contractions to propel urine, and their structure and positioning help ensure unidirectional flow.
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How does natural selection contribute to the theory of evolution?
Answers
Answer: Natural selection leads to evolution because the traits of those who are able to reproduce influence future generations genetics and gradually lead to these passed on traits becoming the normal state of being, thus causing the species in question to evolve.
Explanation:
The digestive system includes groups of tissues that absorb nutrients from food. What is the BEST way to classify this group of tissues?
Answers
Which of following is a characteristic of prokaryotic cells?
A. They are larger than eukaryotic cells
B. They do not have a nucleus.
C. They do not have a DNA.
D. They have organelles.
Answers
Answer:
B.
Explanation:
Only eukaryotic cells have nucleuses.
Which organ is found in the digestive system?
heart
lungs
stomach
kidneys
Answers
Answer:
Stomach
Explanation:
Answer:
stomach. :)
Explanation:
trust me this is the right anwser the one up is right and i also toke the quiz. :)
Elevation is to land as _______________ is to water.
rain
river
depth
moisture
Answers
Answer:
depth
Explanation:
state five purposes why Christians pray
Answers
Answer:
To know the purpose and plan of God for their life.
how biofilms improves food quality?
Answers
Answer: Biofilms can harbor human infectious agents in the environment, but they also can promote remediation of contaminated groundwater and soils. They assist in metals mining and they play an important natural role recycling matter on Earth.
Hope this helps.... Stay safe and have a Merry Christmas!!!!!!! :D
What happens in the energy harvesting phase of glycolysis?
O Glucose is transformed into fructose diphosphate.
O Fructose diphosphate splits into two 3-carbon molecules.
O ATP molecules are broken down to ADP and a phosphate group.
O Glyceraldehyde 3-phosphate is converted into pyruvate.
Answers
The energy payoff phase of glycolysis consists of five additional steps and results in the formation of four ATP, two NADH + H+, and two pyruvate molecules. Substrate level phosphorylation is the process by which ATP is produced from the transfer of a phosphate group from a substrate molecule in a metabolic pathway.
Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. The vast majority of creatures on the planet today use glycolysis, which is an old metabolic route that originated long ago. 2,3 2,3 start superscript, 2, comma, 3, end superscript
Glycolysis is the initial step in the process of cellular respiration in organisms. However, many anaerobic organisms—organisms that do not use oxygen—also contain this route since glycolysis does not require oxygen.
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the skull of a mammal has no sharp canine teeth. the large teeth in the back of the jaw are very flat. what did this mammal eat?
Answers
Mammals' skulls, as well as their dentition, may provide us with information about their diet. The skull of a mammal that lacks sharp canine teeth and has broad, flat molars, is likely to be herbivorous.
Furthermore, the molars' flat shape indicates that the mammal is probably a grazer that consumes grass or tough vegetation. In contrast to carnivorous mammals that use their sharp, pointed canine teeth to tear flesh and their molars to shear meat into smaller pieces, herbivorous mammals use their flat, wide molars to grind and crush tough vegetation.
The molars are often covered in ridges and crests, which increase the surface area of the teeth, allowing them to break down the fibrous plant material into smaller pieces that can be more easily digested. The molars are frequently continually expanding throughout the animal's life, allowing the animal to continue to grind up vegetation even as its teeth become worn down due to constant use.
The skull and teeth of a mammal provide important clues about its lifestyle, feeding habits, and ecology, and scientists can learn a lot about past animals by studying their bones.
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A scientific theory can come from
Answers
Answer:
A scientific theory can come from observations, experiments, and evidence gathered through research. It is a well-substantiated explanation of some aspect of the natural world based on empirical evidence and has been repeatedly tested and confirmed through observations and experiments. The scientific method is typically used to develop and test scientific theories. It involves making observations, asking questions, formulating hypotheses, testing them through experiments, and analyzing the results to conclude.
Explanation:
A scientific theory can come from observations, experiments, and data analysis. It is based on a body of evidence and has predictive power.
Explanation:A scientific theory can come from observations, experiments, and data analysis. It is a well-substantiated explanation of some aspect of the natural world that is based on a body of evidence. Theories in science are supported by empirical evidence and have predictive power.
For example, the theory of evolution in biology is supported by evidence from the fossil record, genetics, comparative anatomy, and other fields. It explains the diversity of life on Earth and makes predictions about the relationships between different species.
In physics, the theory of relativity explains the relationship between space, time, and gravity. It has been tested through experiments and observations, demonstrating its accuracy.
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(WORTH 60 POINTS) Which organisms can cause contagious diseases?
microorganisms
multicellular organisms
Answers
Answer:
microorganisms.
Hope you could understand.
If you have any query, feel free to ask.
Microorganisms is your answer
What lies between Mars and Jupiter?
Answers
Answer: The asteroid belt
Explanation: The full asteroid belt contains over a million members, with the majority lying between Mars and Jupiter.
Scarification is a process that scratches up the surfaces of seeds that pass through the guts of birds. A student wanted to see if scarified seeds grew better than those that were not scarified. He simulated scarification by rubbing 20 cherry seeds with sandpaper. Another set of 20 cherry seeds were left alone. The student planted each of the seeds into separate pots and gave them the same amount of water daily. The pots were placed in a location with a constant temperature of approximately 25 degrees C. The number of seeds that germinated each group was recorded daily for three weeks. Which is the control group?
Which is the experimental group?
What is the independent variable?
What is the dependent variable?
Name at least one controlled variable?
Was quantitative or qualitative data collected?
Answers
The control group is the set of non-scarified seeds. The experimental group is the set of scarified seeds. The independent variable is scarification process. The dependent variable. is the number of seeds that germinated in each group.
Controlled variables are the amount of water supplied daily, the constant temperature of the growing environment, the type of cherry seeds used and the size of the planting pots.
Quantitative data are the daily count of the number of seeds that germinated in each group over three weeks.
The study does not have qualitative data.
Differences between dependent and independent variablesThe independent variable needs no stimulus to generate results.The dependent variable needs to be stimulated by the independent variable to generate results.A scientific experiment needs to feature all of the elements represented above to be effective and reliable. This is because these elements prove that the experiment was carried out methodically, specifically, and with care in each variable and presented data.
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why did early land plants have to live closer to water,or in damp places
Answers
The early land plants have to live closer to water or in damp places because they need water for basic functions like photosynthesis, move the nutrients from the soil to their body, and reproduction, since the morphology of these organisms was still closer to the aquatic plants, being the cuticle one of the structures that help the land plants to cover the rest of the environment without the need of being always closer to a body of water.
diagram of gastrulation and neurulation?
Answers
Question 4
When a neuron is not processing information:
O It is negatively charged
O It has no charge
O It is positively charged
O It is sometimes positively charged, sometimes negatively charged
Answers
When a neuron is not processing information It is negatively charged.
The correct option is A.
What is the role of neurons?Signals are sent and received by neurons, often referred to as nerve cells, from your brain. Although they share many characteristics with other cell types, neurons are physically and functionally distinct. Neurons are able to communicate electrical and chemical messages to other cells via specialised extensions known as axons.
Where are neurons found?The bulk of neurons in vertebrates are found in the central nervous system, however some are found in peripheral ganglia and many neurones are found in sensory organs like the retina and ear.
What is a neuron made of?Three basic components make up a neuron: a cell body, two extensions known as an axon, as well as a dendrite (3). The nucleus (2), which regulates the functions of the cell and houses its genetic material, is located inside the cell body. The axon resembles a tail and carries signals out of the cell.
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The complete question is -
When a neuron is not processing information:
A- It is negatively charged
B- It has no charge
C- It is positively charged
D- It is sometimes positively charged, sometimes negatively charged
Three circuit diagrams are shown. Which statement about the circuit
diagrams is accurate?
Circuit A Circuit B Circuit C
A. Circuits A, B, and C are all series circuits.
OB. Circuits A and C are series circuits, and circuit B is a parallel
circuit.
C. Circuits A and B are series circuits, and circuit C is a parallel
circuit.
OD. Circuit A is a series circuit, and circuits B and C are parallel
circuits.
Answers
From the diagram, circuit a and b are series circuit while c is parallel. Option C
What is a parallel and series circuit?
The components in a parallel circuit are linked together so that the electric current can go along several different routes. The power source is directly connected to each component, forming parallel branches. While the current in a parallel circuit can vary, the voltage between each component is constant.
The components of a series circuit are connected one after the other to create a single path for the passage of electricity. While the voltage across each component can change, the current flowing through each component is constant.
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Analyze the data and make a prediction as to which species has the greatest effect on an ecosystems recovery after a fire.
Species Approximate Percentage of Species Diversity on Earth
Insects 71%
Plants 20%
Fungi 5%
Fish Less than 5%
Reptiles & Amphibians Less than 5%
Birds Less than 5%
Mammals Less than 5%
A) Plants
B) Reptiles & Amphibians
C) Insects
D) Mammals
Answers
Based on the given data, it is likely that the species with the greatest effect on an ecosystem's recovery after a fire is A) Plants.
Plants constitute approximately 20% of species diversity on Earth, making them a significant component of ecosystems.
Plants play a crucial role in post-fire recovery by providing the foundation for ecological succession. They are responsible for recolonizing and stabilizing the soil, preventing erosion, and initiating the process of reestablishing habitat structure. Through their root systems, plants help retain moisture, enhance nutrient cycling, and create microhabitats that support other organisms.
Additionally, plants provide essential resources for other species. They serve as a primary food source for herbivorous animals, and their presence is essential for the survival of insects, birds, and mammals that rely on them for shelter, nesting sites, and breeding grounds.
While other species, such as insects and animals, contribute to ecosystem recovery, the high percentage of plant species diversity suggests that plants have the greatest overall impact. The interactions between plants and other organisms create a complex web of relationships that drive ecosystem functioning and recovery after a fire. Therefore, focusing on restoring and protecting plant populations is crucial for the long-term recovery and resilience of fire-affected ecosystems.
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Identify the types of point mutations depicted.
Glycine (G G C) is transformed to Glycine (G G A).
Glycine Glycine
missense mutation
nonsense mutation
silent mutation
Lysine (A A G) is transformed to stop codon (T A G).
Lysine Stop
missense mutation
nonsense mutation
silent mutation
Answers
The second mutation, where Lysine (A A G) is transformed to a stop codon (T A G), is a nonsense mutation. This is because the mutation results in a premature stop codon that truncates the protein, leading to a nonfunctional or truncated protein.
Answer:
The first one is silent mutation, The second is missense mutation.
Explanation:
silent mutation is when you change the last point of dna in the line. Missense mutation is when you change the first.
Which organism will most likely become fossilized from being buried in sediment? Insect , snail, jellyfish or a worm
Answers
Answer:
When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts.
Explanation:
Which of the following kinds of organisms do photosynthesis? Select all that apply.
Iplants fungi Danimals algae all bacteria some bacteria
Answers
A scientist compares to samples of white powder. One powder was present at the beginning of the experiment. The other Potter was present at the end. She wants to determine whether a chemical reaction has occurred. She finds that neither sample bubbles or dissolves in water. She measures the mass of volume of the solids. Sample one has a volume of 45 cm to the third power And a mass of .5 g. Sample two has a volume of 65 cm to the third and a mass of 1.3 g. What should the scientist conclude?
Answers
Based on the given information, the scientist can conclude that a physical change has occurred rather than a chemical reaction.
The scientist can make this conclusion because the samples did not show any signs of bubbling or dissolving in water, which are common indications of a chemical reaction.
Additionally, the measurement of the mass and volume of the samples shows that there has been a change in both properties. Sample two has a greater volume and mass compared to sample one, indicating that some physical transformation has taken place.
However, without further information or analysis, it is not possible to determine the exact nature of the physical change or identify the substances involved.
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A solution of potassium chlorate, KClO3, has 10 grams of the salt dissolved in 100 grams of water at 40 ºC. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?
Answers
An additional 26 grams of potassium chlorate could be added before reaching the saturation point.
How did we get this assertion?The solubility of potassium chlorate in water at 40 ºC can be found using reference tables. According to those tables, the solubility of potassium chlorate in water at 40 ºC is approximately 36 grams per 100 grams of water.
Since the solution already contains 10 grams of potassium chlorate, this means that an additional 26 grams of potassium chlorate could be added before reaching the saturation point.
It's important to note that the solubility of a salt in water can be affected by various factors, including temperature, pressure, and the presence of other ions in solution, so these values should be taken as approximate.
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DDT, once hailed as one of the greatest scientific developments of the modern world, began to fall out of use after 25-30 years of widespread application. Insect resistance contributed to its decline. Scientists were interested in how insects, specifically mosquito populations, were developing resistance after exposure. Many researchers suspected the GSTe2 gene to be involved with resistance based on gene mapping. In order to test their hypothesis, scientists isolated a population of mosquitoes and maintained them in a lab under constant conditions for four months. At the four month mark, the insects were exposed to low levels of DDT daily for an additional four months. At month eight, the population of mosquitoes was split in half and isolated in separate chambers. Half of the population continued to be exposed to low levels of DDT daily for the remainder of the experiment, while half of the mosquitoes were removed and kept in an environment with no DDT exposure for the remainder of the experiment.
DNA samples were taken from the population(s) at months: eight, sixteen, twenty, and twenty-four. The DNA samples were analyzed and tested for mutations to the GSTe2 gene. Vertical bars in the figure represent two standard errors of the mean (SEM). a) Propose a possible hypothesis the researchers were testing. b) Propose an explanation for the results seen after the populations were separated. c) Describe the change in genetic variation over time once the population is split in half. Justify your response based on the SEM. d) When DDT was being used widely, it took approximately 6-7 years before scientists began seeing resistance in mosquito populations. Propose one reason for why it took so long to see resistance in nature in comparison to how long it took to see resistance in this experiment.
Answers
The researchers were testing the hypothesis that the GSTe2 gene is involved in insect resistance to DDT.
The populations were separated suggest that the mosquitoes exposed to low levels of DDT for the full eight months developed a higher frequency of mutations in the GSTe2 gene compared to the mosquitoes that were not exposed to DDT during the last four months of the experiment.
The change in genetic variation over time once the population is split in half shows that the mosquitoes exposed to DDT had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed mosquitoes.
Natural populations of mosquitoes are subject to a variety of environmental factors, including competition, predation, and disease, which can influence the rate at which resistance develops.
DDT was widely used as an insecticide in the mid-20th century to control a variety of insect pests, including mosquitoes that transmit diseases such as malaria and yellow fever. However, over time, many insect populations, including mosquitoes, developed resistance to DDT, rendering it less effective as an insecticide.
The researchers in this experiment were interested in understanding the genetic basis of insect resistance to DDT. Specifically, they suspected that the GSTe2 gene played a role in this process, based on previous gene mapping studies. To test their hypothesis, they exposed a population of mosquitoes to low levels of DDT for four months, after which they split the population in half and continued to expose one group to DDT while keeping the other group in a DDT-free environment.
The results of the experiment showed that the group of mosquitoes exposed to DDT for the full eight months had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed group. This suggests that exposure to DDT may have selected for mosquitoes with mutations in the GSTe2 gene, which provided them with a selective advantage in the presence of the insecticide.
The changing genetic variation over time is evidenced in the graph by the widening of the vertical bars, which represent two standard errors of the mean. This indicates that as time progressed, the genetic variation in the DDT-exposed group increased, likely due to the selection pressure imposed by the insecticide.
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PLEASE HELP! WILL MARK BRANLIEST
Answers
Answer:
A
Explanation:
Tt (heterozygous) RW (shows codominance) Bb ( full bush is dominant)
Answer:
The clear Answer Is A I've Done The Quiz.
Explanation:
bacteria culture a culture of the bacterium rhodobacter sphaeroides initially has 25 bacteria and t hours later increases at a rate of 3.4657e0.1386t population size after four hours.
Answers
Bacteria culture a culture of the bacterium rhodobacter sphaeroides initially has 25 bacteria and t hours later increases at a rate of 3.4657e0.1386t bacteria per hour, so the population size after four hours is 44.
A procedure for determining if you're suffering from a bacterial infection is a bacteria culture. A sampling of blood, faeces, urine, or spinal fluid may be used for the test. A healthcare professional can choose the best suitable course of therapy utilizing this kind of sample to detect what brought on the infection.
A type of purple bacterium which can produce energy using photosynthesis is called Rhodobacter sphaeroides. In the lack of light, anaerobic phototrophy and aerobic chemoheterotrophy are the optimal development environments for it.
The question is incomplete, find the complete question here
bacteria culture a culture of the bacterium rhodobacter sphaeroides initially has 25 bacteria and t hours later increases at a rate of 3.4657e0.1386t bacteria per hour. Find the population size after four hours.
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