A crossover in meiosis is an exchange of genetic material betweenMultiple Choicehomologous chromosomes.nonhomologous chromosomes.different arms of the same chromatid.sister chromatids of a duplicated chromosome.

Crossover of homologous chromosomes does not occur.Group of answer choicesmeiosismitosisboth mitosis and meiosisneither mitosis nor meiosisNext

What is crossing over?Group of answer choicesthe exchange of homologous portions of sister chromatidsalso referred to as the “independent assortment of chromosomes”a direct consequence of the separation of sister chromatidsthe movement of genetic material from one chromosome to a nonhomologous chromosomemaking an RNA copy of a DNA strandthe exchange of homologous portions of nonsister chromatidsNext

The stage of meiosis in which chromosomes pair and cross over is:

Crossing over is the process in whichMultiple choice question.homologous chromosomes align randomly along the metaphase plate.sister chromatids are separated to opposite poles of the cell.sister chromatids align singly along the metaphase plate.homologous chromosomes physically exchange pieces.

When chromosomes fail to separate during meiosis, this is known asMultiple Choicecrossing over.nondisjunction.translocation.random separation.mitosis.