Male Reproductive System

Somatic cells are diploid. Diploid means that these cells have ___ copies of each chromosome.

1

2

3

4

2

A different variation of the code for a specific gene is called a(n) ___.

variant

embryo

allele

alternate

allele

Because meiosis involves two round of division, at the end of meiosis there are ___ cells produced.

haploid

diploid

triploid

tetraploid

tetraploid

When all four chromosomes are paired together in a tetrad, it is possible for homologous chromosomes to exchange genetic material. This is called crossing over. In which phase is crossing over possible?

prophase I

metaphase I

anaphase I

prophase II

prophase I

An individual's chromosomes are either "maternal" (originating from the mother) or "paternal" (originating from the father). Every gamete has a unique combination of chromosomal material, a random mixture of maternal and paternal chromosomes. This phenomenon is called ___.

crossing over

independent assortment

fertilization

synapsis

independent assortment

The testes are the site for sperm production. Sperm are produced within tightly coiled, looped ___.

bulbourethral glands

seminal vesicles

seminiferous tubules

venous plexus

seminiferous tubules

Which cell produces testosterone

spermatogenic cells

sustentacular cells

interstitial cells

interstitial cells

Which cell aids in the process of making sperm

spermatogenic cells

sustentacular cells

interstitial cells

sustentacular cells

Which cell turns into sperm

spermatogenic cells

sustentacular cells

interstitial cells

spermatogenic cells