Question

Thе presence of freckles is a dominant feature. A man without freckles marries a woman who has freckles. The woman's father did not have freckles, and her mother did. Write down the genotypes of husband and wife? Identify which children can be expected from this marriage, write down their genotypes? Write a scheme of crossing

Answer 1

The genotype of the female can beheterozygous dominant ( Ff) for freckles. The male genotype will be homozygous recessive (ff)

Explanation:

• The genotype of the male will be : ff

• The genotype of the female will be: Ff

• To identify which children can be expected from this marriage, lets make a punnet square:

       f                    f

F     Ff                   Ff

f      ff                     ff

• There will be a 50% chance of the offspring being heterozygous for freckles and there will be a 50% chance that they will not have freckles.