pull each group of strings toward the poles. To do this, you will need to break...

pull each group of strings toward the poles. To do this, you will need to break each centromere so that the sister chromatids are free to move to their own pole. Are the chromosomes that move to the upper pole any different in number or kind from those that move to the lower pole? Why or why not

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Expert Solution

sister chromatids are separated and move to opposite poles during anaphase of mitosis and anaphase II of meiosis.

In mitosis the chromosomes have two sister chromatids attached to each other at the centromere, two sister chromatids are formed by the replication of the DNA, so both sister chromatids have the same sequence of DNA. In anaphase of mitosis, the sister chromatids are separated and move to opposite poles, sister chromatid of each chromosome moves to opposite poles, so the same number of chromatids moves to opposite poles and both poles get chromatids with same genetic composition.

In mitosis chromosomes have two sister chromatids attached to each other at the centromere, two sister chromatids are formed by the replication of the DNA, so both sister chromatids have the same sequence of DNA. during prophase I, the recombination occurs between non-sister chromatids of homologous chromosomes, so chromatids of a single chromosome are genetically different. during meiosis I the homologous chromosomes are separated so each daughter cell formed by meiosis I have only one set of homolgous chromosome and chromosomes are in the duplicated state.

during meiosis II, these sister chromatids are separated and moves to opposite poles, the number of chromatids moving to opposite poles are the same, but the poles get chromstids with different genetic compositon.

gladiator answered 1 year ago

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