One gamete is formed during?
a. spermatogenesis
b. oogenesis
c. sexual reproduction
d. crossing-over

Chromosomes that are similar in size, shape, and genetic content are called which of the following?
a. homologous chromosomes
b. haploid
c. diploid
d. karyotypes

The two exact copies of dna that make up each chromosome are called?
a. homologous chromosomes
b. centromeres
c. chromatids
d. autosomes