Question

Assume that height in people depends on four pairs of alleles. In one family,

the parents are of moderate heights (not very tall and not very short), but their son is

much taler than they are. Can you explain this using possible genotypes of parents

and son? (Assume that the environment has no role in this case).​

Answer 1

Answer:

Polygenic Inheritance and Environmental Effects

Explanation:

Some human characteristics, such as height, eye color, and hair color, don’t come in just a few distinct forms. Instead, they vary in small gradations, forming a spectrum or continuum of possible phenotypes. Features like these are called quantitative characters, and they’re typically controlled by multiple genes (often, many genes), each of which contributes to the overall phenotype. For example, although there are two major eye color genes, there are at least 14 additional genes that play roles in determining a person’s exact eye color