Author Question: The vanishing twin phenomenon refers to _____. a. more triplets and quadruplets being born than ... (Read 75 times)

D2AR0N · **on:** Aug 20, 2018

The vanishing twin phenomenon refers to _____.
a. more triplets and quadruplets being born than twins due to fertility drugs
b. the disappearance of embryos within 13 weeks of conception
c. the decreasing percentage of dizygotic twins in favor of monozygotic twins
d. the emergence of an additional fetus in a pregnancy that began with only two fetuses
e. the decreasing percentage of twins in favor of single-child births due to in vitro fertilization techniques

Question 2

Vitamin A toxicity is likely to result from:

a. consuming too many dark green and deep orange vegetables.
b. overconsumption of whole grains.
c. consuming large amounts of fortified foods or vitamin A supplements.
d. drinking too much orange juice.