Question

Blue eye colour is recessive to brown eye colour. A brown eyed man whose mother was blue-eyed marries a blue-eyed woman. The children shall be

• A. Both blue eyed and brown eyed 1 : 1
• B. All brown eyed
• C. All blue eyed
• D. Blue eyed and brown eyed 8 : 1

Answer 1

The correct option is A Both blue eyed and brown eyed 1 : 1

When a brown eyed heterozygous male marries a homozygous blue eyed woman, in the next generation, 50% children are brown eyed and 50% children are blue eyed are formed. The ratio of brown eyed to blue eyed children is 1:1. It is called test cross.

So, the correct option is ‘Both blue eyed and brown eyed 1:1’.