Choose the best answer.

1			Meiosis results in gametes with the same number of chromosomes, 23 pairs, as in the other cells of the body.
			A)	True
			B)	False
2			In order to penetrate the egg, the anterior tip of the sperm has enzymes enclosed in a specialized lysosome called the zona pellucida.
			A)	True
			B)	False
3			The fertilizing sperm blocks any other sperm from fertilizing the same egg.
			A)	True
			B)	False
4			Another term for pregnancy is _________.
			A)	conception
			B)	gestation
			C)	parturition
5			Which one of the following processes does not occur during the preembryonic stage?
			A)	cleavage
			B)	implantation
			C)	organogenesis
			D)	embryogenesis
6			At which stage does the preembryo implant in the uterus?
			A)	zygote
			B)	morula
			C)	blastocyst
7			The presence of primitive organs at 8 weeks marks the transition from the embryonic stage to the fetal stage.
			A)	True
			B)	False
8			The nervous system is one of the major derivatives from the endoderm.
			A)	True
			B)	False
9			An evolutionary hypothesis is that morning sickness is an adaptation to protect the embryo from toxins.
			A)	True
			B)	False
10			After implantation, the conceptus is nourished through the placenta throughout its development.
			A)	True
			B)	False
11			The placenta is produced by the fetus.
			A)	True
			B)	False
12			What is the name for the fine hair that covers a 20 week old fetus?
			A)	meconium
			B)	lanugo
			C)	vernix caseosa
			D)	digital rays
13			Most miscarriages occur within 3 weeks of fertilization.
			A)	True
			B)	False