Rubella has a disastrous impact if it is contracted during the first trimester of a pregnancy,yet has hardly any impact if contracted at the end of a pregnancy.This is an example of
A) fetal immune system maturation.
B) imprinting.
C) maturational timing.
D) a critical period.

Question

Quizplus · Accepted Answer

This is an example of a critical period, which is a specific window of time during development when a particular event or experience must occur in order for normal development to take place. In this case, the critical period for rubella infection during pregnancy is the first trimester, and if the infection occurs during this time, it can have disastrous impacts on fetal development. However, if it occurs later in pregnancy, the fetus is less vulnerable and the impact is minimal.

Rubella Has a Disastrous Impact If It Is Contracted During