Generalizing from data presented in the text, you should conclude that ______ embryos are more vulnerable during the prenatal period and _______ are more vulnerable during the first two years of life.
A) male; male
B) female; female
C) male; female
D) female; male

Question

Quizplus · Accepted Answer

Despite the fact that there are about 125 male conceptions for every 100 females conceived, at birth this ratio falls to about 105 to 100. These data reflect both the greater likelihood of the sperm containing the smaller Y chromosome to fertilize the egg and the greater vulnerability of the male during the prenatal period. The book also notes that males continue to be more vulnerable throughout childhood.

Generalizing from Data Presented in the Text, You Should Conclude