Alleles A and a are on one pair of autosomes, and allele...

Question

Alleles A and a are on one pair of autosomes, and alleles B and b are on a separate pair of autosomes. Does crossover between one pair of homologs affect the expected proportions of gamete genotypes? Why or why not? Does crossover between both pairs of chromosomes affect the expected gamete proportions? Why or why not?

Accepted Answer

Hello, everyone and welcome to today's video. So suppose jeans B and C are very close together on the same chromosome. So what can we expect from the gas form after meiotic cell division? As answer choice A we have, they will be all genetically diverse and rare. As answer choice B we have, they will form and deploy cells as answer choice C we have the gammy types will be in unequal proportions and as answer choice D we have the number of daughter cells will be cut in half. Now, as it turns out these genes are located very close in a chromosome are called linked jeans. And during mayo all division, they're going to be inherited together. Therefore, when two genes are too close to each other or they are linked, the gay types are going to produce are going to have unequal proportions of genes. Since this, since these two genes are very close together, they will go to one or the other but they will stick together. After me, cell division happens, which is going to create as we stated, this unequal proportion of genes. Now looking at our answer choices, the answer choice C the gay types will be in unequal proportion is going to be the correct one. I really hope this video helped you and I hope to see you on the next one.

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