Answer:
<em>If all variation among individuals in a population is due to differing genotypes alone, heritability is 100% and the slope of the line used to measure it is 1.</em>
Explanation:
If the genes play no role in the variation among organisms of a species, then the heritability will be zero percent. Hence, if all the variations among individuals of a population occur due to the differences in the genotype, hence the heritability will be 100%. This is because genes are the hereditary molecules and the genotype of an organism comprises of the different genes present in an organism.
Hippocampal neurogenesis<span> is impacted by environmental factors such as age, excercise, stress and anti-depressant use.</span>
The statement that is false about base stacking is; B. Stacking interactions are hydrophilic in nature.
<h3>What is the truth about Base Stacking?</h3>
Base stacking is defined as a common arrangement of nucleobases that are found in the three dimensional structure of nucleic acids. Bases (or base pairs) are planar, and these planes stack at contact distance , excluding water and maximizing Van der Waals interactions.
Looking at the given options, the only one that can be said to be false about the defined base stacking above as regards nucleic acids is option B.
The missing options are;
A. Stacking interactions occur when two or more bases are positioned with their rings parallel to each other.
B. Stacking interactions are hydrophilic in nature.
C. Stacking involves a combination of van der Waals and dipole-dipole interactions between bases.
D. Base stacking helps to minimize contact of the bases with water.
E. Base stacking interactions are important in stabilizing the three-dimensional structure of nucleic acids.
Read more about Base Stacking at; brainly.com/question/19670398
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Answer:
bright blue trait = recessive
yellow trait = dominant
Explanation:
let the letter B represent the gene for skin colour.
This means that the dominant gene is 'B' while the recessive gene is 'b'
A dominant gene is one that is exhibited phenotypically in the presence of both gene variants (heter0zygous state - Bb) while a recessive gene is only expressed phenotypically when it is in a h0m0zygous state (bb)
In order to find out the genotype of the parents, let us consider each cross one after the other.
1. A bright blue female and a bright blue male produce all blue progeny.
2. A yellow female and a yellow male produce a mix of both bright blue and yellow progeny
From statement 2, it can be deduced that the trait for yellow colour is dominant because a cross of the parents exhibiting this trait produces bright blue offsprings too, meaning that the genetic composition of the parents contains the gene that codes for yellow colour. Since these parents show a yellow colour in a heterozygous state, then the trait for yellow colour is dominant.
Therefore, the genotypes of the parents in each case include:
1. A bright blue female and a bright blue male produce all blue progeny. (bb × bb)
2. A yellow female and a yellow male produce a mix of both bright blue and yellow progeny (Bb × Bb)
