Color blindness occurs in about 8% of North American men of European descent, but only about 4% of North American men of African descent. Assuming X-linked recessive inheritance for color blindness, what frequencies of color blindness would you expect in each of these populations?

Incomplete Dominance and Codominance So far, we have been studying the inheritance of genes that show complete dominance. In other words, one allele is completely dominant over another. In some cases, such as incomplete dominance and codominance, one allele is not completely dominant over another or the alleles affect the phenotype equally. Examples of incomplete dominance include feather color in parrots (C*C* = blue, C'C = yellow, C*Cf = green) and hair texture in humans CC = curly; C'C' = straight; CC' = wavy Practice Problem 3: За. If a straight-haired man marries a curly haired woman, what are the predicted genotypes and phenotypes of their children? If a parrot with yellow feathers is crossed with a parrot with green feathers, what are the predicted genotypes and phenotypes of their offspring? 3b.

A1) The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygoous for the traits and marries a woman who has no widows peak and is heterozygous for hitchhikers thumb. What fraction of this couples children should have a widow's peak and a hitchhiker's thumb? 3/8 1/4 1/2 3/4 0 A2)The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygoous for the traits and marries a woman who has no widows peak and has no hitchhikers thumb. What fraction of this couple's children should have no widow's peak and a hitchhiker's thumb? 3/8 0 1/4 1/2 1/8

What is the approximate percentage chance that individual V.2, shown in the pedigree diagram below will have inherited the X- linked recessive allele shown to be carried by his great-great-grandmother? Note: only type the number, not the percentage symbol. Answer: The chance that individual V.2 shown in the pedigree below has inherited the X-linked recessive allele shown to be carried by his great-great grandmother is approximately Blank 1 percent. 노 ㅍ먹이 12 I 마일 메인 de 먹어 요 58 ㅁ + ܡܐ

In human beings, the gene for red‑green colorblindness (r) is sex‑linked and recessive to its allele for normal vision (R), while the gene for freckles (F) is autosomal and dominant over its allele for nonfreckled (f).  A nonfreckled, normal‑visioned woman whose father was freckled and colorblind, marries a freckled, colorblind man whose mother was nonfreckled. What is the probability that the first child born to the couple will either be a freckled, colorblind boy or a non‑freckled, normal visioned girl or a non-freckled, normal visioned boy?   What is the probability that the first four children born to the couple will be freckled and normal visioned girls?