Question

Select the correct answer. A normal appearing couple is found to be heterozygous recessive for albinism. Both have the genotype Aa. The gene responsible for albinism is recessive to the normal pigment-producing gene. What are the chances of their children being albino? A. 3:4 children will be albino. B. All children will be albino. C. 1:4 children will be albino.

Answer 1

there is 4 chances to see their kids' genomic combinations.

2 out of 4 possibilities of which their kids are completely normal and not a recessive carrier, 1 out of 4 possibility where their kid will be normal but is a carrier of the recessive albinism

1 out of 4 possibility where the kid will be an albino.

Ratio-wise, the answer is: c. 1:4 children will be albino