Question

18 complex inheritance
true or false:
if a couple has a \one-in-four\ risk of having a child with a genetic disease, and their firstborn has the disease, the next three children will have a reduced risk.
explain why you chose your answer.

Explanation:

Each pregnancy is an independent genetic event. The 1-in-4 risk is a probability for each individual child, not a cumulative or changing risk. Having one affected child does not alter the underlying genetic odds for subsequent pregnancies.

Each pregnancy has an independent 25% (one-in-four) risk of the child having the genetic disease. The outcome of one pregnancy does not affect the probability for future pregnancies, so the risk remains the same for the next three children.

Answer:

True or False: False