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Meiosis with Crossing Over

View the animation below, then complete the quiz to test your knowledge of the concept.

1A crossover in meiosis is an exchange of genetic material between
A)sister chromatids of the same chromosome.
B)sister chromatids of homologous chromosomes.
C)sister chromatids of non-homologous chromosomes.
D)non-sister chromatids of homologous chromosomes.
E)non-sister chromatids of non-homologous chromosomes.

2A tetrad is made up of
A)four non-homologous chromosomes.
B)four non-homologous chromatids.
C)four homologous pairs of chromosomes.
D)two homologous pairs of chromosomes.
E)two homologous chromosomes, each consisting of two chromatids.

3Which of the following statements about crossing over is TRUE?
A)It occurs only in males.
B)It occurs only in some chromosomes.
C)It occurs only between genes that are heterozygous.
D)It results in reduced genetic variation among gametes.
E)None of the above

4Crossing-over occurs during prophase I of meiosis.

5Crossing-over allows the reassortment of linked genes.

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