Answer: Option A
Step-by-step explanation:
Genetic disease can be defined as the condition in which the disease is transferred from the parents to the offspring.
The disease can be expressed in both the cases whether it is present in the dominant condition or recessive condition.
If the diseased gene is found in the dominant condition then it will always be present but in case the gene is present in recessive condition then also it can be present.
Example: Hemophilia in case of males. Male is never a carrier of hemophilia he is always a affected male in both the cases( recessive or dominant).
hence, we conclude that genetic disease can be expressed even in case of recessive condition or in case of dominant condition.