Choose the best answer.

1			Fertilization results in Need a Hint?
			A)	a zygote.
			B)	a diploid cell.
			C)	a cell with a new genetic combination.
			D)	All of these are correct.
2			The diploid number of chromosomes in humans is 46. The haploid number is Need a Hint?
			A)	138.
			B)	92.
			C)	46.
			D)	23.
3			After chromosome replication and during synapsis, Need a Hint?
			A)	homologous chromosomes pair along their lengths.
			B)	sister chromatids pair at the centromeres.
			C)	homologous chromosomes pair at their ends.
			D)	sister chromatids pair along their lengths.
4			During which stage of meiosis does crossing over occur? Need a Hint?
			A)	prophase I
			B)	anaphase I
			C)	prophase II
			D)	telophase II
5			Synapsis is the process whereby Need a Hint?
			A)	homologous pairs of chromosomes separate and migrate toward a pole.
			B)	homologous chromosomes exchange chromosomal material.
			C)	homologous chromosomes become closely associated.
			D)	the daughter cells contain half of the genetic material of the parent cell.
6			Terminal chiasmata are seen during which phase of meiosis? Need a Hint?
			A)	anaphase I
			B)	prophase I
			C)	metaphase I
			D)	metaphase II
7			Which of the following occurs during anaphase I? Need a Hint?
			A)	Chromosomes cluster at the two poles of the cell.
			B)	Crossing over occurs.
			C)	Chromosomes align down the center of the cell.
			D)	One version of each chromosome moves toward a pole.
8			Mitosis results in two ________ cells, while meiosis results in _______ haploid cells. Need a Hint?
			A)	haploid/four
			B)	diploid/two
			C)	diploid/four
			D)	haploid/two
9			Genetic diversity is greatest in Need a Hint?
			A)	parthenogenesis.
			B)	sexual reproduction.
			C)	asexual reproduction.
			D)	binary fission.
10			Which of the following is not a hypothesis about the evolution of sex? Need a Hint?
			A)	It evolved to repair damaged DNA.
			B)	It evolved as a way to eliminate individuals.
			C)	It evolved as a way to eliminate mutations.
			D)	It evolved as a way to "store" recessive alleles that may prove beneficial in the future.