At What Stage is a Mutation Predicted to Have the Effect

Question

At what stage is a mutation predicted to have the effect?
A)shortly after birth
B)after birth but before puberty
C)after puberty
D)during early embryonic development
E)after the age of 60

Accepted Answer

Mutations that affect development and growth are expected to occur early, during embryonic development, which is when the basic body plan is established. Mutations that occur later may still have an effect, but are less likely to have as significant an impact on overall growth and development. Therefore, the best choice is D, during early embryonic development.