Gentic problems Widow’s peak is dominant to not having widow’s peak. One parent has a widow’s peak

phenotypic-genotypic
gentic-problems

#1

gentic problems
Widow’s peak is dominant to not having widow’s peak. One parent has a widow’s peak and the other does not have a widow’s peak. Figure out the phenotypic and genotypic ratios of all possible offspring. Is there any way they can have a baby that does not have a widow’s peak. Make sure to include a Punnett Square (s). Type of Dominance in problem ________________________________________

Answer:
Widows peak genotype could be WW or Ww.

not having widows peak genotype- ww

so, the genotype of the parents could be WW,ww or Ww, ww.

W W
w Ww Ww

w Ww Ww
Thus, in this case genotype of all offsprings would be Ww, and they will have widows peak. Both genotypic and phenotypic ration would be 1.

In the second case,

W w
w Ww ww

w Ww ww

1:2 population would have widows peak , and 1:2 population would not have widows peak,

phenotypic and genotypic ratio would be 1:1.