A way to determine whether maternal influences on offspring occur before or after birth is to
A) be sure that all offspring are heterozygous for the traits being studied.
B) conduct a reciprocal cross.
C) cross-foster the offspring.
D) hold the environments of the mothers constant.

Question

Quizplus · Accepted Answer

Cross-fostering involves moving offspring from their biological parents to adoptive parents, allowing researchers to distinguish between pre-birth (genetic or in utero) influences and post-birth (environmental) influences based on the traits the offspring exhibit.

A Way to Determine Whether Maternal Influences on Offspring Occur