Question

In a cross between a male and female, both heterozygous for sickle cell anemia gene, what percentage of the progeny will be diseased?

• A. 50%
• B. 75%
• C. 25%
• D. 100%

Answer 1

The correct option is C

25%

The correct option is C

Explanation of the correct option:

According to the question,

Step 1: Formula used:

Percentage of affected individuals=(number of affected progeny/total number of progeny)x100

Step 2: Number of affected progeny=1

Total number of progeny= 4

Step 3: Applying the formula

Percentage of affected individuals= (1/4)x100

=25%.

Final answer: the percentage of affected individuals is 25%.