Biology, 18.12.2019 05:31 magics

Which of the following best describes how crossing over occurs during meiosis?

a. during prophase i, homologous chromosomes are lined up and pulled apart to opposite poles.

b. during prophase ii, sister chromatids trade places with each other before metaphase begins.

c. during prophase i, segments of chromatids are exchanged between homologous chromosomes.

d. during prophase ii, chromosomes overlap and sections of each chromosome switch places.

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During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

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Which of the following best describes how crossing over occurs during meiosis?

a. durin...