Question

A study found that children with light- coloured eyes likely to have parents with light -coloured eyes. On this basis,we can say anything about weather the light eye colour trait is dominant or recessive? Why or why not​

Answer 1

Answer:

It is a recessive trait

Explanation:

This is because people with a completely recessive gene will then pass down their recessive gene, but only in the case that the other parent's genes are dominant and recessive or just recessive (as in Bb or bb if B stands for dark eyes and b stands for light eyes).  This could not be the case if the parents have a dominant gene (BB).

Answer 2

Answer:

No, since two copies of traits are inherited from parents, one from mother and the other form father. Unless we know the nature of these two variants of traits we cannot tell which is dominant and which is recessive. Recessive traits appear when both the parents contribute recessive allele. From this statement we can only presume are that both parents are contributing recessive allele.