Genes play a role in pubertal timing as is demonstrated by ______.
A) puberty triggers being able to be tracked
B) identical twins experiencing menarche in puberty at the same time
C) few consistent reasons for why puberty occurs
D) siblings of all ages experience puberty at about the same age

Question

Quizplus · Accepted Answer

Identical twins share the same genetic makeup, so if they experience the onset of puberty at the same time, it suggests that genes are playing a role in the timing.

Genes Play a Role in Pubertal Timing as Is Demonstrated