Which of the following processes occurs when homologous chromosomes cross over?Group of answer choicesCorresponding segments of sister chromatids are exchanged.Two sister chromatids exchange identical pieces of DNA.Two sister chromatids get tangled, resulting in one re-sequencing its DNA.Maternal alleles are “corrected” to be like paternal alleles and vice versa.Corresponding segments of nonsister chromatids are exchanged.Next
Question
Which of the following processes occurs when homologous chromosomes cross over?Group of answer choicesCorresponding segments of sister chromatids are exchanged.Two sister chromatids exchange identical pieces of DNA.Two sister chromatids get tangled, resulting in one re-sequencing its DNA.Maternal alleles are “corrected” to be like paternal alleles and vice versa.Corresponding segments of nonsister chromatids are exchanged.Next
Solution
The process that occurs when homologous chromosomes cross over is that corresponding segments of nonsister chromatids are exchanged.
Here's a step-by-step explanation:
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During the prophase I stage of meiosis, homologous chromosomes pair up in a process called synapsis.
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Each pair of homologous chromosomes consists of four chromatids. These chromatids are not identical to each other. Two of them are from the mother (maternal) and two are from the father (paternal). The maternal and paternal chromatids are referred to as nonsister chromatids.
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During synapsis
Similar Questions
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.
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 occurs between homologous chromosomes.Group of answer choicesmeiosis onlyneither mitosis nor meiosisboth mitosis and meiosismitosis onlyNext
Crossing over is __________.View Available Hint(s)for Part Athe formation of tetradsan independent assortment of chromosomesthe exchange of corresponding portions of homologous chromosomesthe movement of genetic material from one chromosome to a nonhomologous chromosome
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