Which of the following is a major cause of the dramatic rise in fraternal twinning and other multiple births in industrialized nations over the past several decades?
A) global warming
B) older maternal age
C) late fertilization of the ovum
D) variation in oxygen levels

Question

Quizplus · Accepted Answer

Older maternal age is a major cause of the dramatic rise in fraternal twinning and other multiple births in industrialized nations over the past several decades. As women delay childbearing, the chances of releasing more than one egg during ovulation increase, leading to a higher likelihood of fraternal twinning and multiple births in general.

Which of the Following Is a Major Cause of the Dramatic