Question in English:
The concept of gene flow is demonstrated when a cow is expelled from her herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these is most likely to increase?
A. Natural selection
B. Genetic variation
C. Environmental suitability
D. Reproductive mutations
Answer:
B. Genetic variation/Variación genética
Explanation:
When an organism from one population enters a new population that does not normally mix, it brings with it its own unique genetic variation.
Its new alleles are introduced into the new population when the cow breeds, enhancing the amount of gene variation in the new herd. This is how gene flow increases variation
Answer:
<h3>Genotype frequencies</h3>
25% DD
50% Dd
25% dd
or
1 DD: 2 Dd: 1 dd
<h3>Phenotype frequencies</h3>
75% Dark brown, 25% light brown
or 3 dark brown: 1 light brown
Explanation:
Two heterozygous parents have the genotypes Dd. Therefore, the cross is Dd x Dd.
D d
D DD Dd
d <em>Dd dd</em>
<em />
25% (1:4) of the organisms have the genotype DD, and therefore the phenotype is dark brown, since it has two copies of the dark brown fur allele (DD)
50% (1:2) of the organisms have the genotype Dd, and therefore, the phenotype is dark brown since dark brown fur (D) is dominant to light brown fur (d).
25% (1:4) of the organisms have the genotype dd, and therefore the phenotype is light brown, since it has two copies of the light brown fur allele (DD)
The shape of a bird's beak depends on its diet. ... Eagles and other birds of prey have a sharp, hooked beak in order to more easily tear the meat of the animals they feed on.
