One of the following minerals is needed for men more than women :​

According to Hardy-Weinberg, when a population is in equilibrium, it will have the same allelic frequencies generation after generation, meaning that they are stable, they are not evolving.

When any evolutive force is acting on the population, this equilibrium breacks, and allelic and genotypic frequencies change through generations, differing from the expected ones.  

A) Option 7 is the correct answer ⇒ 0.41

B) Option 6 is the correct answer ⇒ 120

C) Option 7 is the correct answer ⇒ 3.84

D) Option 1 is the correct answer ⇒ The class represents a population that is in H-W equilibrium

E) Option 1 is correct. Comparing the value of Chi-square that I calculated with the critical value of Chi-square for  the appropriate degrees of freedom I conclude that P>0.05. Hence, I reject the null hypothesis.

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Allelic frequencies in a locus are represented as p and q, referring to the

allelic dominant or recessive forms. The genotypic frequencies after one generation are p² (H0m0zyg0us  dominant), 2pq (H3ter0zygous), q² (H0m0zyg0us recessive). Populations in H-W equilibrium will get the same

allelic frequencies generation after generation.

The sum of the allelic frequencies equals 1, this is p + q = 1.

In the same way, the sum of genotypic frequencies equals 1, this is

p² + 2pq + q² = 1

Being

 p the dominant allelic frequency,

 q the recessive allelic frequency,

 p² the h0m0zyg0us dominant genotypic frequency

 q² the h0m0zyg0us recessive genotypic frequency

 2pq the h3ter0zyg0us genotypic frequency

Situation: Through PCR, we have determined the PER3 genotypes for a class of students as follows:

 H4/H4 = 125 individuals;

 H4/H5 = 85 individuals;

 H5/H5=24 individuals.

⇒ Total number of individuals= 125 + 85 + 24 = 234

⇒ Genotypic frequencies, F(xx):

 F(H4/H4) = 125/234 =0.534

 F(H4/H5) = 85/234 = 0.363

 F(H5/H5) = 24/234 = 0.102

⇒ Allelic frequencies, f(x):

 f(H4) = p = F(H4/H4) + 1/2 F(H4/H5) = 0.534 + 0.363/2 = 0.534 + 0.182 = 0.716

 f(H5) = q = F(H5/H5) + 1/2 F(H4/H5) = 0.102 + 0.363/2 = 0.102 + 0.182 = 0.284

Questions:

A)  According to the theoreticall frame, we know that 2pq is the h3ter0zygous genotypic frequency. So,  

F(H4/H5) = 2pq = 2 x 0.716 x 0.284 = 0.408 ≅ 0.41 ⇒ Option 7 is the correct answer.

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B)  According to the theoreticall frame, we know that p² is the h0m0zyg0us genotypic frequency. So,

p = 0.716

p² = 0.5126 ≅ 0.513 ⇒ This is the genotypic frequency.

To calculate the number of individuals carrying this genotype, we need to multiply it by the total number of

individuals.

H4/H4 individuals = p² x total number of individuals = 0.513 x 234 = 120

Option 6 is the correct answer.

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C)  Up to here we know that 2pq = 0.41 and p² = 0.513

Now we need to calculate q ²

q = 0.284, then q² = 0.284² = 0.08

These are the expected frequencies if the population was in H-W equilibrium.

The expected number of individuals with each genotype are:

 H4/H4 = 0.513 x 234 = 120 individuals

 H4/H5 = 0.41 x 234 = 96 individuals

 H5/H5= 0.08 x 234 = 18 individuals

The observed number of individuals with each genotype are:

 H4/H4 = 125 individuals

 H4/H5 = 85 individuals

 H5/H5=24 individuals

X² = ∑ (Observed - Expected)²/Expected)

X² = ((125-120)²/120) + ((85 - 96)²/96) + ((24-18)²/18)

X² = 0.21 + 1.26 + 2 =

X² = 3.47

The clossest option is option 7 = 3.84. The difference might be related to decimals and rounding.

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D)  The correct answer is  1 ⇒ The whole class represents a population that is in Hardy-Weinberg equilibrium

The null hypothesis always predict that populations are in H-W equilibrium.

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E)  

 X² = 3.47

 Freedom degrees = n - 1 = 3 - 1 = 2

 Table p value: 7.82

 Significance level, 5% = 0.05

 Table value/Critical value = 5.991

5.991 > 0.347

Meaning that the difference between the observed individuals and the expected individuals is statistically  significant. Not probably to have differe by random chances. There is enough evidence to reject the null

hypothesis.

Option 1 is correct. Comparing the value of Chi-square that I calculated with the critical value of Chi-square for  the appropriate degrees of freedom I conclude that P>0.05. Hence, I reject the null hypothesis.

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Answer:

8

Explanation:

If the primary producers absorb 2.5 x 106 kilojoules of radiant energy per year, and assuming an energy transfer efficiency of 10%, then only 10% of that energy, or 2.5 x 105 kilojoules, would be transferred to the primary consumers.

Assuming that 10% of the energy at each trophic level is transferred to the next level, then only 10% of the 2.5 x 105 kilojoules, or 2.5 x 104 kilojoules, would be transferred to the secondary consumers.

Similarly, only 10% of the energy at the secondary consumer level, or 2.5 x 103 kilojoules, would be transferred to the tertiary consumers.

Therefore, the transfer of energy to the tertiary consumers would be 2.5 x 103 kilojoules per year.

This is because energy transfer between trophic levels is inefficient, with only about 10% of the energy being transferred to the next level due to losses in the form of heat, movement, and waste. As a result, the amount of energy available to higher trophic levels is limited, and the number of trophic levels in a food chain is often limited by the amount of energy available.

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The best idea to solve the problem with the least amount of inconvenience for everyone involved is option D - planting a rain garden with deep roots to soak up excess water.

Planting a rain garden with deep roots can help soak up excess water, preventing flooding in the playground. This solution does not require any major construction or transportation changes, making it the least inconvenient for everyone involved.

Option A, which involves building a new playground in a different location, would require a significant amount of time, money, and resources, causing inconvenience and disturbance for the school and students. Option B, which involves transporting students to a different playground, would also require additional transportation resources and scheduling changes, causing inconvenience for the school and students. Option C, which involves covering the playground with tarps, may not be a feasible solution as it can be difficult to completely seal off the playground from rainwater.

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Based on the image, the temperatures are:

a. Normal day: 32 C

b. Snowy day: 32 F

c. Boiling water: 212 F

d. Meat: 212 F

e. Sunny day in the desert: 100 F

Temperature is a physical quantity that measures the degree of hotness or coldness of an object or a system. It is a fundamental concept in physics and is commonly measured in units of Celsius (°C), Fahrenheit (°F), or Kelvin (K). Temperature is related to the average kinetic energy of the particles that make up a substance or system.

When the temperature of a substance or system increases, the average kinetic energy of the particles also increases, leading to expansion, changes in state, and chemical reactions. Temperature plays a crucial role in many fields, including thermodynamics, meteorology, chemistry, and engineering. Accurate temperature measurements are essential in many applications, such as industrial processes, climate monitoring, and medical diagnostics.

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The correct question is what caused the dip in greenhouse emission in transportation after 2007 and is denoted as option E.

This is defined as a pictorial representation of data or variables in an organized manner.

From the graph, we can infer that there was a decrease in greenhouse emission from year 2007.

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Answer: All cells share four common components: 1) a plasma membrane, an outer covering that separates the cell's interior from its surrounding environment; 2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; 3) DNA, the genetic material of the cell; and 4) ribosomes

Explanation:

Answer:

1. lactose intolerant

2. lactase

3. dairy products

4. e.coli

5. enzymes

6. protein

7. repressor

8. operator

9. rna polymerase

10. transcribe

11. bases

12. repressor

13. operator

14. transcription

Answer:

Energy in an ecosystem: is part of an open system, is recycled and reused, is transferred through the food chain and is lost as heat.

The area around a charge in which the electric force is experienced by other charged objects is the electric field.

The electric field is a property of the space around a charged object and is created by the presence of that charge. Any other charged object placed within the electric field will experience a force exerted on it due to the interactions between the electric charges.

The electric field can be thought of as a field of influence that extends throughout space, representing the force that would be experienced by a positive test charge placed at any given point within the field. The strength and direction of the electric field depend on the magnitude and sign of the charge creating the field. Electric field lines, which are used to visualize the electric field, point away from positive charges and towards negative charges.

The electric field plays a crucial role in understanding and describing the behavior of charged particles and the interactions between them. It is a fundamental concept in electromagnetism and has applications in various fields, including electronics, electrical engineering, and physics.

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Answer:B

Explanation:

Answer: Married couples often have more similarities than randomly coupled people.

Explanation: "researchers developed a couple-based compatibility test to measure the compatibility of couples based on similarity in looks, personality, intelligence, social skills, attitudes, habits, and leisure preferences. Married couples had the most similarities compared to randomly coupled people. This information suggests that we’re more likely to look for people who are just like ourselves. Science certainly seems to suggest that opposites don't always attract."

Answer:

It's because an organism's phenotype, or physical traits, are what truly decide whether it can reproduce and pass on its genotype to the following generation.

Because the phenotype of an organism represents the alleles that are actually expressed in that organism, natural selection affects that phenotype.

Explanation:

Answer:

One example of an organism that contains a single chromosome and undergoes cell division through fission or budding is the bacterium called Escherichia coli (E. coli). E. coli is a unicellular organism with a single circular chromosome. It reproduces through binary fission, a process in which the cell divides into two genetically identical daughter cells.

Answer:

Prokaryotes

Explanation:

Answer: I like cheese

Explanation:

Answer:

symbiosis.

Explanation:

The term that you are referring to is symbiosis. (a symbiotic relationship)

Symbiosis is a proximate and often long-term interaction between two or more different biological species.

Answer:

1/2 of an answer is zero answer.

Explanation:

The two main types of nucleic acids are DNA and RNA. Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell's activities, while RNA converts that code into proteins to carry out cellular functions.

Currents north of the equator flow clockwise and currents south of the equator flow anti-clockwise.

The Pacific, Atlantic, and Indian Oceans' South Equatorial Currents are ocean currents that run from east to west between the equator and a point around 20 degrees south. It reaches 5 degrees north of the equator in the Pacific and Atlantic Seas.

Cold ocean currents go from the poles toward the equator while warm ocean currents do the opposite.

The northwest coast of Africa is where the current originates, and it is mostly fueled by the cooler waters pouring from the northeast Atlantic. The NEC is joined by waters that originate south of the equator as it moves over the open ocean, entraining waters from the Southern Atlantic into the Northern Atlantic.

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The natural process that the illustration models would be erosion.

Is a process by which the topmost soil of an area gets removed.

Erosion of topmost soils can be removed by water or by the wind.

When erosion is caused by water, it is called water erosion. If it is by wind, it is called wind erosion.

Thus, the blowing away of flour on a tray filled with flour by a fan is a way of demonstrating how wind erosion of soils works.

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The length of a wave—which could be an electromagnetic wave, a sound wave, or any other wave—is the distance between its crests and troughs. The wave's crest is its highest point, while its dip is its lowest and wavelength.

Thus, Because a wavelength represents a distance or length, it is expressed in length units like meters, centimeters, milimeters, nanometers, etc.

Light's wavelength changes with color, or it differs for each hue. While violet has the shortest wavelength, red has the longest. UV light has a shorter wavelength than violet light. In a similar vein, infrared energy has a larger wavelength than red light.

Frequency and wavelength are inversely proportional. This implies that frequency decreases as wavelength increases. Similar to this, a shorter wavelength results in a higher frequency.

Thus, The length of a wave—which could be an electromagnetic wave, a sound wave, or any other wave—is the distance between its crests and troughs. The wave's crest is its highest point, while its dip is its lowest and wavelength.

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Base substitutions, deletions, and insertions are the three forms of DNA mutations.

Define mutation.

A mutation is a change in the sequence of genes. Mutations can be as simple as replacing a single DNA building block, or nucleotide base, with another nucleotide base. Larger mutations, on the other hand, can influence multiple genes on a chromosome. A point mutation occurs when one base in the DNA is changed to another. A missense mutation arises when that point mutation results in the placement of a different amino acid from that codon. Due to the fact that numerous codons code for the same amino acid, not all point mutations result in a missense mutation.

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Answer:

b. The enzyme and substrate would be stuck together.

Explanation:

Enzymes are proteins whose active site binds to specific chemical reactants (i.e., substrates), thereby forming a complex that is similar to the interaction between a lock and its key. This active complex lowers the energy of the reaction and promotes a conformational change in the substrate to break down it into multiple products. When the enzyme contains mutations in its active site, the ability to bind the substrate is altered. In this case, the enzymatic reaction can't occur because the interaction enzyme-substrate doesn't produce an active complex.

In the process of mutation of a proteolytic enzyme, the enzyme and the substrate would be stuck together.

The process of mutation of a proteolytic enzyme is a ubiquitous and permanent post-translational alteration that involves the restricted and highly selective hydrolysis of a protein's peptide and isopeptide bonds by a protease.

We know that enzymes are proteins that have an activation site that binds to certain chemical reactant molecules (e.g substrates), generating a complex akin to the interaction of a lock and its key.

This active complex decreases the reaction's energy and induces a conformational shift in the chemical reactant molecule (substrate), therefore allowing it to be broken down into numerous products.

The capacity of the enzyme to interact with the substrate is changed and altered when it has mutations in its activation site.

Therefore, this enzymatic reaction cannot take place in this scenario due to the fact that the enzyme-substrate contact does not form an active complex.

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Answer:

D. An egg cell

Explanation:

Meiosis is the type of cell division that creates egg and sperm cells.

∴ The only answer stated from the statement is D.

Answer:

Topoisomerase

Explanation:

Topoisomerases are enzymes that produce changes in the topology of the DNA during replication, transcription, traduction, or reparation processes. They can cut one or both strands and in order to relieve torsional stresses in the supercoiled structure of DNA. With this, they help to maintain the chromosome's integrity. There are two types of topoisomerases: topoisomerase I (it cuts only one strand of DNA) and topoisomerase II (it is able to cut both strands of DNA).

Answer:

one can be a plant and the other an animal

Explanation:

The first organism is a Filter Feeder, which filters water to consume phytoplankton (microalgae).

The second organism is a Scraper/Grazer, which consumes leaves and algae and fungi on the leaf surface.

The third organism is a Shredder, which consumes algae on rocks.

The fourth organism is an Invertebrate Predator, which preys on small invertebrates.

The fifth organism is a Vertebrate Predator, which preys on vertebrates and invertebrates.

The light reactions produce ATP and NADPH, which are used in the Calvin cycle. The Calvin cycle produces glucose and other organic compounds, which are used in the light reactions.

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Answer:

Red blood cell antigens can be sugars or proteins

Blood group antigens are either sugars or proteins, and they are attached to various components in the red blood cell membrane.

Answer:

A mutation cannot be corrected and can either harm, benefit or be neutral in an organism

Explanation:

A common gene mutation could be Cancer, this is a highly severe gene mutation that can cause a multitude of complications to an organism when left untreated. Some mutations such as Heterochromia, an eye mutation causing two different colored eyes, cause no harm, but makes the organism look more unique.

Hope this helps!