Which of the following processes occurs when homologous chromosomes cross over?Group of answer choicesMaternal alleles are “corrected” to be like paternal alleles and vice versa.Corresponding segments of sister chromatids are exchanged.Two sister chromatids get tangled, resulting in one re-sequencing its DNA.Corresponding segments of nonsister chromatids are exchanged.Two sister chromatids exchange identical pieces of DNA.Next

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

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.

Crossing over occurs between homologous chromosomes.Group of answer choicesmeiosis onlyneither mitosis nor meiosisboth mitosis and meiosismitosis onlyNext