Question

In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased ?
(1) 50%
(2) 75%
(3) 25%
(4) 100%​

Answer 1

Explanation:

25% will be diseased

50%will be carrier

25% will be normal

Answer 2

From the given question the correct answer is :

(3) 25%

In a cross between a male and female, both heterozygous for sickle cell anaemia gene, (3) 25% of the progeny will be diseased