GenCh3answers

GenCh3answers - 5. As cells divide mitotically, each...

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5. As cells divide mitotically, each chromosome consists of identical sister chromatids that are separated to form genetically identical daughter cells. Although the second division of meiosis appears to be a similar process, the “sister” chromatids are likely to be different. Recombination during earlier meiotic stages has swapped regions of DNA between sister and nonsister chromosomes such that the two daughter cells of this division typically are not genetically identical. 7. Note : The octad illustrated in (a) happens to have no crossover in the region between the centromere and the gene being followed. A crossover here would change the pattern of ascospores in the ascus but would not effect the 1:1 ratio of alleles in the meiotic products. 10. The resulting cells will have the identical genotype as the original cell: A/a ; B/b . 14. a + b a + b a + b Parent cell Chromosome duplication a + b a + b Daughter cells a + a + b b Segregation
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Chapter Three 42 18. Yes. Half of our genetic makeup is derived from each parent, each parent’s genetic
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GenCh3answers - 5. As cells divide mitotically, each...

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