THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.
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the random distribution of the sister chromatids to the two daughter cells during anaphase II.
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the relatively small degree of homology shared by the X and Y chromosomes.
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Detailed explanation-1: -The random way each pair of homologous chromosomes lines up at the metaphase plate.
Detailed explanation-2: -Independent assortment refers to the genes or alleles that sort into the newly formed gametes independently of one another. This independent assortment is a result of the independent division of chromosomes into separate gametes.
Detailed explanation-3: -Independent assortment is the process where the chromosomes move randomly to separate poles during meiosis. A gamete will end up with 23 chromosomes after meiosis, but independent assortment means that each gamete will have 1 of many different combinations of chromosomes.
Detailed explanation-4: -Metaphase I For example, if the two homologous members of chromosome 1 are labeled a and b, then the chromosomes could line up a-b, or b-a. This is important in determining the genes carried by a gamete, as each will only receive one of the two homologous chromosomes. This is called Independent Assortment.
Detailed explanation-5: -There are 4 sub-phases in meiosis I: • Prophase I: During prophase I, homologous chromosomes line up side by side. They are physically in contact with one another. This process is known as synapsis. Synapsis is when crossing over occurs.