Question

Jacob has four siblings (three sisters and one brother). Jacob is the only child that has green eyes, but both his parents have blue eyes, along with all of his siblings. Jacob's sister Tamesha recently had a child, and her child has green eyes like her brother Jacob, but the baby's father has blue eyes like Tamesha. Jacob has two children of his own and they both have green eyes, but Jacob's wife has blue eyes.

What would be the genotype for both of Jacob's parents ?
What would Jacob's genotype be for eye color?
what are the genotype possibilities for the offspring?
What would Jacob's wife's genotype be for eye color?
What are the possibilities of offspring for Jacob and his wife?

Answer 1

Jacob's parents would have a genotype homozygous for blue eyes. Jacob's genotype for eye color would be heterozygous. The genotype possibilities for the offspring depend on Jacob's wife's genotype.

Step-by-step explanation:

The genotype for both of Jacob's parents would be homozygous for blue eyes, as they both have blue eyes. Jacob's genotype for eye color would be heterozygous, as he has one allele for green eyes and one allele for blue eyes. The genotype possibilities for the offspring of Jacob and his wife would depend on the genotype of his wife. If Jacob's wife is homozygous for blue eyes, all of their offspring would have heterozygous genotypes for eye color. If Jacob's wife is heterozygous, their offspring could have either heterozygous or homozygous genotypes for eye color.