Question

For an autosomal dominant disease, if two affected parents have a child, what is most likely the risk of passing on the disorder?

A 0
B 25%
C 50%
D 75%
E 100%

Answer 1

The most likely risk of passing on an autosomal dominant disease, when both parents are affected, is 50%.

Step-by-step explanation:

For an autosomal dominant disease, if two affected parents have a child, the most likely risk of passing on the disorder is 50%. This is because autosomal dominant diseases only require one copy of the mutated gene for the disorder to be expressed. If both parents are affected, there is a 50% chance that they will pass on the mutated gene to their child.