444,987 views
13 votes
13 votes
Hereditary assignment: Sex linked traits. Must show punnet square, and provide explanation of genotype and phenotype percentages/ratios.

Hereditary assignment: Sex linked traits. Must show punnet square, and provide explanation-example-1
User Aborn Jiang
by
3.3k points

1 Answer

22 votes
22 votes

First of all, we need to do the Punnet square to determine what will be the offspring genotype:

As we can see on the Punnet square, we have 4 different possible genotypes for the offspring, and in this case in particular, each genotype corresponds to a specific phenotype too, because this characteristic is linked to a sex chromosome.

We then have half the offspring blind, but half of it are women (25% out of the total offspring) and a half are men.

Also, we have the other half of the offspring not blind, with half of it being women and the other half being men.

Hereditary assignment: Sex linked traits. Must show punnet square, and provide explanation-example-1
User Hepidad
by
2.7k points