Question

In humans , if gene B gives brown eyes and gene b gives blue eyes. What will be the colour of eyes of the persons having the following combination of genes ?

(a) Bb (b) bb (c) BB

Answer 1

B is the dominant gene that codes for brown color while the b gene is recessive which codes for blue color.

In the case of Bb: The person will have brown eyes as the dominant trait will be expressed.

In the case of bb: There is no dominant trait so the person will have blue eyes.

In the case of BB: Both the alleles are of brown eyes so the person will have brown eyes.