A man of blue eyes married a women of brown eyes and they have a girl of brown eyes . is the information provided is enough to show whose character is dominant?

1 Answer
Feb 24, 2018

This information given in the question is enough to show that brown eye color is dominant over blue eye color.

Explanation:

We assume that man having blue eye color is homozygous for this allele and the woman having brown eye color is also homozygous for this allele.

The male gamete will carry one allele for blue eye color and female gamete will carry one allele for brown eye color. The girl born to these parents will be heterozygous for the alleles of eye color. The girl child will have one allele of brown eye color and one allele of blue eye color.

According to Mendel's Law of dominance, when two alternate alleles of a trait are present together, the allele that expresses itself in phenotype will be dominant allele and other allele, though present, is not able to express in phenotype will be recessive allele.

As the girl in question born to these parents has brown eye color , it is clear that brown eye color is dominant over blue eye color.
Thus from the information given in the question, we can easily know that brown eye color is dominant over blue eye color.