Polar bodies:

1.	serve both as a dumping ground for extra sets of chromosomes and ensure that the ovum will have most of the cytoplasm.
2.	get rid of of defective sets of chromosomes.
3.	have no function.
4.	prevent twin pregnancies.

The testes of a pre-pubertal boy will have:
1. spermatocytes
2. spermatozoa
3. spermatogonia
4. spermatid

The dilated end of vas deferens are called:
1. corpus
2. seminal vesicle
3. ampulla
4. tubuli recti

Prostate mainly:
1. produces sperms
2. secretes fructose
3. secretes alkaline fluid
4. helps in spermiogenesis

Human embryos will develop into female by default due to:
1. presence of an X chromosome
2. an ovarian determining factor
3. presence of a Y chromosome
4. lacks of Y sex chromosome

The term used to describe the changes that happen to the sperm inside the female reproductive tract that allows the sperm to become capable of fertilizing the egg is:

Identify the correct chronological order of the events given:

Labor can be hastened by:
1. progesterone
2. estradiol
3. prostaglandins
4. HCG

A big advantage of the evolution of internal fertilization is:
1. need for large number of gametes to be produced
2. fetuses to be kept warm, moist, nourished, and protected inside the mother
3. synchronous release of gametes by both sexes
4. prevention of dehydration of gametes

In vertebrate eggs with large yolks, cleavage is described as _______ and results in a ________ on top of the yolk.
1. meroblastic/trophoblast
2. holoblastic/blastodisc
3. meroblastic/blastodisc
4. meroblastic/blastomere