Vince Sandra two children with down syndrome. Vince brother has down syndrome and vince Sister has two kids with down Syndrome. vince and another Sandra plan to have baby, what is probability child wont have down syndrome? a.1/4 b.1/3 c.2/3 d.0
e.1
Answers
Since Vince and Sandra already have two kids with Down's syndrome and as Vince's siblings have the disease, there is a high probability of having the disease. The probability that another child will have Down's syndrome will be 1/4. Thus, the correct option is A.
Down's syndrome is an autosomal recessive disease. Lets assume the allele for the disease to be denoted by d. The dominant, unaffected allele would be denoted by D.
Since Vince and Sandra have children affected with Down's syndrome, it means both are carriers of the disease. Thus, the genotype of both Vince and Sandra would be Dd.
A cross between these two would result in genotypes DD, Dd and dd in the ratio of 1:2:1. Thus, the genotype of the affected offspring will be dd.
Therefore, probability of affected offspring = \(\frac{Number of affected offspring}{Total number of offspring}\) = \(\frac{1}{4}\)
Thus, the correct option is A.
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Related Questions
I have to find two words for an acrostic poem and it’s about atmosphere and I need a word that starts with R and E?
Answers
Rebellious, going against the grain
Oomph, you have a magnetic draw
Buoyant, abound with energy
Enchanting, a charming presence
Reassuring, a comforting presence
Trustworthy, your word is good as gold
Obliging, willing to accommodate
I don’t know for E
. Using proper anatomical vocabulary, explain why it is that: If you MAINTAIN a position of FULL knee extension it is difficult to maximally flex the hip joint. Approach this question from BOTH a passive and active perspective. (aka: active and passive insufficiency)
A. Passive:
B. Active:
Answers
When maintaining a position of full knee extension, it becomes difficult to maximally flex the hip joint due to passive and active insufficiency. Passive insufficiency refers to the inability of a muscle or tendon to lengthen enough to allow for a full range of motion. Active insufficiency occurs when a muscle cannot generate enough tension to produce the desired movement.
A. Passive: In the case of maintaining full knee extension, passive insufficiency comes into play. The passive insufficiency of the hamstrings, which are responsible for hip flexion, occurs when the hamstrings are already stretched to their maximum length in knee extension. This restricts the ability of the hamstrings to further lengthen and perform their full range of motion for hip flexion.
B. Active: Active insufficiency involves the inability of a muscle to generate sufficient tension for a particular movement. In this scenario, the quadriceps muscles, responsible for knee extension, are actively contracting to maintain the extended knee position. When the quadriceps are actively contracting to keep the knee extended, their ability to generate additional tension for hip flexion is limited. This active insufficiency of the quadriceps restricts their capacity to fully flex the hip joint while maintaining full knee extension.
In summary, when maintaining full knee extension, both passive and active insufficiency contribute to the difficulty in maximally flexing the hip joint. Passive insufficiency of the hamstrings limits their ability to lengthen further, while active insufficiency of the quadriceps restricts their capacity to generate sufficient tension for hip flexion.
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Which is an x-ray of the urinary system that uses contrast dye?
Answers
An x-ray of the urinary system uses contrast dye is called an intravenous pyelogram (IVP), also known as an intravenous urogram (IVU) or excretory urogram.
During an IVP, a contrast dye is injected into a vein, usually in the arm, and it circulates through the bloodstream. As the kidneys filter the blood, the contrast dye is concentrated and excreted into the urinary system. The dye helps to visualize the structures of the urinary system more clearly on the x-ray images.
Once the contrast dye reaches the kidneys, the x-ray technician takes a series of x-ray images at timed intervals. These images capture the dye as it moves through the urinary tract, highlighting the kidneys, ureters, bladder, and urethra. The contrast dye provides a contrasting effect against the surrounding tissues, making the urinary system more visible on the x-ray images.
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true or false: low calorie diets increase the free radical activity in cells, thus increasing the life span of the cell.
Answers
False. Low-calorie diets do not increase free radical activity in cells. In fact, research has shown that reducing calorie intake, particularly through a method known as caloric restriction.
Caloric restriction involves reducing daily calorie intake without causing malnutrition. This approach has been shown to extend the life span of various organisms, including yeast, worms, flies, and rodents. One of the mechanisms behind this is thought to be the reduction of free radical production and oxidative damage within cells.
Free radicals are unstable molecules that can cause damage to cellular components such as DNA, proteins, and lipids, leading to aging and disease. Reducing calorie intake can lower the metabolic rate and oxidative stress, thereby decreasing the production of free radicals.In summary, low-calorie diets do not increase free radical activity in cells. Instead, they may help reduce free radical production and oxidative stress, potentially increasing the life span of cells.
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where can you get information about endangered species?
Answers
Answer:
The National Wildlife Federation
Explanation:
I think this is where you can learn about endangered species.
Hope this helps!
A student did an experiment with ice. A beaker of ice was placed on a hot plate for 30 minutes and its temperature was recorded after every 5 minutes. The table below represents how the temperature and state of ice changes with time.
Time from start (in minutes) 0 5 10 15 20 25 30
State of matter in beaker ice water P water Q steam steam
Temperature of matter in beaker (in ° C) 0 0 50 80 100 100 142
What do the labels P and Q most likely represent?
both P and Q represent ice
both P and Q represent water
P represents ice and Q represents steam
P represents steam and Q represents ice
Answers
From the table, we can see that P and Q represent water. (Option B)
What does P and Q represent?We know that the liquid range of water is 0 - 100 degrees Celsius. Within this temperature range, water exists as a liquid substance.
Looking at the table we can see that the temperatures of P and Q are 50 and 100 degrees Celsius respectively hence both P and Q represent water.
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Impressions of others are based upon their self schema. please select the best answer from the choices provided t f
Answers
The impressions of others are based on your own schema. true, impressions are based on your own guidelines.
What is impression in psychology?The term was coined by psychologist Edward L. Thorndike in 1920 to define an often-recurring cognitive bias: people used to draw global conclusions and apply them to individuals or ethnic groups, without knowing them individually.
With this information, we can conclude that the impressions of others are based on your own schema. true, impressions are based on your own guidelines.
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Answer: false
Explanation:
circle with center at (-3, 7) and radius 8
Answers
Explanation:
Centre of the circle ( h,k)=(-3,7)
radius of the circle (r)=8
Equation of the circle is,
(x-h)^2+(y-k)^2=r^2
or,(x+3)^2+(y-7)=8^2
or,x^2+6x+9+y^2-2y+49=64
or,x^2+y^2+6x-2y+58-64=0
or,x^2+y^2+6x-2y-6=0 is the required equation of the circle
What are the 3 main stages of wound healing?
Answers
The three main stages of wound healing are: Inflammatory phase , Proliferative phase, Maturation phase
Inflammatory phase: This stage begins immediately after the injury and lasts for several days. During this stage, the body's immune system responds to the injury by sending white blood cells to the site of the wound to fight infection and remove any debris. Proliferative phase: This stage begins a few days after the injury and can last for several weeks. During this stage, new tissue is generated to fill the wound. The wound begins to granulate, with new blood vessels forming to bring oxygen and nutrients to the site. Maturation phase: This stage begins several weeks after the injury and can last for up to two years. During this stage, the new tissue that was formed during the proliferative phase is remodeled and strengthened. Collagen fibers reorganize and align in the direction of stress, making the new tissue stronger. These stages of wound healing are interdependent and overlap to some degree, and a variety of factors, such as age, nutrition, and underlying health conditions, can affect the healing process.
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Which feature do scientists mainly consider when grouping organisms according to evolutionary classification?
Answers
Organisms can be ordered by quite a few measures, including by and large likenesses, colors, ecological functions, and so forth.
The diversity of living organisms on earth is genuinely surprising, practically overpowering. Humans have concocted approaches to arranging, or grouping, biological diversity all through human history. Organisms can be ordered by quite a few standards, including generally speaking likenesses, colors, ecological functions, and so on. Notwithstanding, it is by and large concurred that the most valuable way for researchers to coordinate biological diversity is to bunch organisms as per shared evolutionary history. This way the gathering not just outcomes in a coordinated order, it additionally contains and passes on information about how we might interpret the evolutionary history of these gatherings.
In spite of the fact that how we might interpret evolutionary relationships among organisms has significantly worked somewhat recently, it is in no way, shape or form total. Relationships among organisms, and gatherings of organisms, keep on being reconsidered as new information opens up.
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Which traits appear to be most beneficial for survival in this environment?
Answers
Please make me brainalist and keep smiling dude I hope you will be satisfied with my answer is updated
An adaptation is any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.
Individuals with adaptive traits—traits that give them some advantage—are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Over time, these advantageous traits become more common in the population.
how far is the earth away from the sun
Answers
1. Explain how dehydration synthesis and
hydrolysis are related.
Answers
Answer: In dehydration synthesis reactions, a water molecule is formed as a result of generating a covalent bond between two monomeric components in a larger polymer. In hydrolysis reactions, a water molecule is consumed as a result of breaking the covalent bond holding together two components of a polymer.
Which component of physical fitness is skill related? A.Flexibility B.cardiorespiratory C.muscular strength D.agility
Answers
Answer:
D.agility
Explanation:
D.agility
Answer:
D Agility
Explanation:
physical fitness components related to skills, including: explosive power, speed, agility, coordination, speed, reaction and balance.
4. sharks and whales both have streamlined bodies and tail flukes. how do we know that these similarities are because of convergent evolution?
Answers
We know that the similarities between sharks and whales are due to convergent evolution because they are not closely related organisms.
Convergent evolution occurs when two or more different species develop similаr trаits or chаrаcteristics in response to similаr environmentаl pressures. Whаles аnd shаrks аre not closely relаted, so these trаits were not inherited from а common аncestor. While whаles were evolved from tetrаpods, shаrks were not. Аlthough they both hаve streаmlined bodies аnd tаil flukes, these trаits developed independently in eаch group аs аn аdаptаtion to their аquаtic environment. Therefore, the similаrities between shаrks аnd whаles аre аn exаmple of convergent evolution.
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what a spring tide is
Answers
Explanation:
spring tide, tide of maximal range, near the time of new and full moon when the Sun and Moon —i.e., aligned with the Earth. Conjunction is the time during new moon when the Sun and Moon lie on the same side of the Earth.
Research the issue of genetically modified foods, and then write an essay to be read by your peers in which you argue either for or against their use. Support your position with evidence. << read less style normal.
Answers
The potential for adverse consequences on the human body posed by GM foods is the biggest danger. It is thought that eating these genetically modified crops can lead to the emergence of illnesses.
What justifications exist for not using genetically modified food?GMOs, however, raise a number of issues. Plant gene mingling poses a risk to allergy patients, as was the case when soybeans and Brazil nuts were bred. Antibiotic resistance is increased by GMO decreasing the effectiveness of medications.
What impact do GMO foods have on people's health?These studies demonstrate that GMO have the same effect on you as non-GMO foods. GMO foods are just as wholesome and secure to consume as their non-GMO equivalents. In fact, several GMO plants have undergone modifications to enhance.
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1) Which of the following is a piece of biochemical evidence for all for all species that supports the theory of evolution from a common ancestor?a) aerobic respirationb) storage of DNA in the nucleic) production of the same types of proteinsd) use of the same genetic code
Answers
One biochemical evidence that supports the theory of evolution that says that we all come from a common ancestor is the fact that all organisms use the same genetic code for the translation of proteins, for example, the codon AUG codes for the amino acid methionine in all organisms.
This means D would be the right answer.
When an enzyme becomes denatured, what often happens to the rate of reaction?
A. Rate of reaction increases
B. Rate of reaction stays the same
C. Rate of reaction decreases
Answers
Answer:
C
Explanation:
After a certain temperature, the reaction rate decreases because the heat starts to denature the enzyme so that it no longer can function.
Answer:
C. Rate of reaction decreases
Explanation:
As an enzyme becomes denatured, the rate of reaction decreases.
Which of the following accurately match an atom and cell to an example of each?
An example of an atom is hydrogen, and an example of a cell is a plant cell.
An example of an atom is a proton, and an example of a cell is an organism.
An example of an atom is carbon, and an example of a cell is a tissue.
An example of an atom is bacteria, and an example of a cell is a plant cell.
Answers
The statement an example of an atom is carbon, and an example of a cell is a tissue accurately matches an atom and cell to an example of each.
A cell is a central littlest unit of issue which is comprised of protons (positive particles), nonpartisan (impartial particles), and electrons(negative particles). Everything, including solids, gases, and liquids consists of atoms.
Cells are comprised of mind boggling particles, which are thus comprised of iotas. There are 100 trillion atoms in the average human cell, according to scientists.
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If several highly educated scientists all study the same scientific data, which of the following is most likely to explain why they may all have different conclusions?
Answers
If several highly educated scientists all study the same scientific data, then they may have different conclusions because of the following factors:
Interpretation of data: Each scientist may have a different interpretation of the data, leading to different conclusions. This is because interpreting data involves the use of subjective judgment and prior experiences with similar data.
Personal biases: Personal biases may also affect the conclusions drawn from the scientific data. Personal biases refer to a scientist's preconceived ideas or prejudices that can influence their interpretation of the data. This can affect their ability to draw an objective conclusion.
Overemphasis of certain aspects: The overemphasis of certain aspects of the data or leaving out of certain details can result in different conclusions among scientists. Scientists may focus on different aspects of the data, leading to different conclusions.
Experimental setup and procedure: The experimental setup and procedure can also have an impact on the conclusions drawn from the data. If there are variations in the experimental setup or procedure, it can lead to different conclusions among scientists.
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The point at which the nerves from the left side of the body cross over into the right side of the brain, and vice versa, is the __________. Group of answer choices
Answers
The point where the nerve passes from the left side of the body to the right side of the brain and vice versa is the medulla oblongata.
The medulla oblongata, also called the medulla oblongata, the lowest part of the brain, the lowest part of the brainstem. The medulla oblongata is connected to the midbrain via the pons, enters posteriorly into the spinal cord, and joins at an opening in the base of the skull (foramen magnum).
The left hemisphere controls the right half of the body, and vice versa because of a crossing of the nerve fibres in the medulla or, less commonly, in the spinal cord. Although the right and left hemispheres are mirror images of each other in many ways, there are important functional differences.
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what is the primary purpose of each (A) membrane channels (b) membrane pumps?
Answers
According to the research, the primary purpose of membrane channels is to circulate ions, and of membrane pumps is to maintain differences in ionic concentration.
What are membrane channels and pumps?They are pores in the cell membrane through which ions circulate for muscle contraction or membrane potential changes that may depend on a ligand or voltage, depending on whether their opening is determined by the binding of a ligand or by changes of voltage.
In this sense, membrane pumps is the mechanism of active ion transport, consuming energy across a membrane against an electromechanical gradient to maintain differences in ion concentration between the intracellular and extracellular space.
Therefore, we can conclude that according to the research, the primary purpose of membrane channels is to circulate ions, and of membrane pumps is to maintain differences in ionic concentration.
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In complex movements, muscles commonly work in groups rather than individually. The hamstrings flex the knee. Which muscles are antagonists to the hamstrings?.
Answers
The antagonist is the quadriceps. The quadriceps contract to extend the knee during the contact and recovery phase, while the hamstrings lengthen to allow movement.
Is the hamstring stretch antagonistic or agonistic?
When the knee extends, the hamstrings stretch, as well as the antagonists of this activity. When the knee bends, the hamstrings become the agonist muscle, and the quadriceps now become the antagonist.
The three hamstring muscles are as follows: Biceps femoris, located on the outside of your body. This hamstring's function is to flex your knee, extend your thigh at your hip, and rotate your lower leg from side to side when your knee is bent.
Therefore, In complex movements, muscles that are antagonists to the hamstrings are the quadriceps.
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I need help with this is for tonight!!!
Answers
Why was motion of Earth not observable after the action-reaction event with the ping pong ball or clay ball?
Answers
According to Newton’s third law, motion of Earth is not observable because Earth is so large, we cannot perceive the change as it is so negligible.
Newton's third law of motion states that every action has a corresponding and opposing response.
The action-reaction forces can be used to study or observe Newton's third law. When a clay ball or ping pong ball is put to the ground, the clay ball flattens on the side that meets the ground while the ping pong ball rebounds into the air.
Newton's third law states that even though the action-reaction forces on the balls and the Earth were equal in strength and directed in opposing directions during each encounter, the resulting movements of the interacting objects were dependent on their masses.
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What is the
Human Genome
Project?
A. A project started by scientists to map and sequence the
entire human genome.
B. A group of scientists that decided to look into the
history and evolution of humans.
C. A field that developed a computer system that was
advanced enough to read DNA on its own.
Answers
A. A project started by scientists to map and sequence the entire human genome is the Human Genome Project.
The Human Genome Project is an international research effort whose main goals are to identify all 50,000–100,000 genes found in the human genome, decipher the chemical sequence of the complete human genetic material (i.e., the entire genome), and provide research tools to analyze all this genetic data.
A project started by scientists to map and sequence the entire human genome. An extensive multinational effort was made as part of the Human Genome Project to map and sequence the whole human genome, which contains all of the genetic material found in an individual. This study, which includes scientists from numerous nations and organizations, started in 1990 and was finished in 2003. The project's objective was to produce a thorough map of the human genome that would aid in understanding the genetic underpinnings of human biology and illness. The data produced by the Human Genome Project has had a significant influence on many fields of biology and medicine and is still a valuable source for continuing research.
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SOMEONE HELP!!! ITS FOR A MAJOR GRADE!!
"Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits. He recognized the mathematical patterns of inheritance from one generation to the next."
Through his work, Mendel published his experiments to explain his findings.
What did his laws of inheritance state?
A.Parental genes are randomly separated from the sex cells so that sex cells contain only one gene of the pair.
B.Each trait of an organism can contain multiple alleles of that trait.
C.Organisms with alternate forms of a gene will express the dominant form of the gene.
D.The inheritance of one trait is not dependent on the inheritance of another.
E.Genes can be transferred from the parent generation directly to the offspring based on the environmental factors surrounding the offspring.
Answers
Answer:
I believe is A
Explanation:
Answer:
A B and D i think
Explanation:
Normal values for glomerular blood hydrostatic pressure (GBHP), capsular hydrostatic pressure (CHP), and blood colloid osmotic pressure (BCOP) are 55 mm Hg, 15 mm Hg, and 30 mm Hg, respectively. What would NFP be if blood pressure changes caused GBHP to increase to 60 mm Hg
Answers
If the glomerular blood hydrostatic pressure (GBHP) increases from the normal value of 55 mm Hg to 60 mm Hg, the net filtration pressure (NFP) would be affected.
The net filtration pressure (NFP) is calculated as the difference between the forces that promote filtration and those that oppose it. The forces that promote filtration are GBHP and blood colloid osmotic pressure (BCOP), while the force that opposes filtration is capsular hydrostatic pressure (CHP). Therefore, if GBHP increases to 60 mm Hg, the NFP would be calculated as follows:
NFP = (GBHP + BCOP) - CHP
NFP = (60 + 30) - 15
NFP = 75 mm Hg
In conclusion, if GBHP increases to 60 mm Hg, the net filtration pressure (NFP) would increase to 75 mm Hg. This increase in NFP may lead to an increase in glomerular filtration rate (GFR), which can affect kidney function. It is important to monitor and maintain normal values for GBHP, CHP, and BCOP to ensure proper kidney function.
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diary entry
your name is Usain or Cathy Freeman of sunny vale college,suncity your school had interhouse competition for one day at BNZ stadium
Answers
Answer:
12th February, 2021 10:30 p.m.
Friday
Dear Diary,
Today I'm very happy as I had won many events in the interhouse competition which was held today in BNZ Stadium.
So, in which I was also selected and our school named Sunny Vale College, Suncity held this interhouse competition in the BNZ Stadium. There were many events such as disc throw, javelin throw, 100 meters sprint, and many more. I had participated in many of the events. I also got the 1st position in 100 meters sprint, shot foot , disc throw and high jump. At last when the event was going to end there was also a wonderful event that was relay race. I had been selected for this group relay and at last our group won the relay race.
It was a very lucky day for me, on this wonderful day of the events held by our school.
Usain .