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why two crossovers are needed on one chromatid arm?
explain please
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- . For the chromosomes shown in Figure , draw the chromatids that would result from a two-strand double crossover: one crossover between C and D and the other crossover between D and E.why The chromatids formed byrecombination within the inversion loop of a pericentric inversionheterozygote are genetically unbalanced?An initial crossover event will occur between A and B, as indicated in the corresponding image. After this initial event occurs, a second cross over event occurs (not illustrated) involving the products of the first crossover event. Given the chromosome organization below, which two chromatids of the bivalent were involved and between which genes did the second crossover event occur to produce the indicated chromosomes? a. A B c, A b c, a B C, and a b C b. A B C, A B C, a b c, and a b c (return to the original crossover depicted in the image, and then determine how the second crossover event produced this arrangement
- Explain why recombination events do not always result in crossing-over.In Figure 4-6, why does the diagram not show meiosesin which two crossovers occur between the same twochromatids (such as the two inner ones)?Referring to Figure 17-19, draw a diagram showing the process whereby an inversion formed from crossing over could generate a normal sequence.
- A crossover has occurred in the bivalent shown figure.If a second crossover occurs in the same region between these twogenes, which two chromatids would be involved to produce thefollowing outcomes?A. 100% recombinantsB. 0% recombinantsC. 50% recombinantsAre chiasmata visible manifestations of crossover events?What would be the effect of crossing-over between two sister chromatids?
- A man who is a carrier of a translocated 15/21 chromosome marries a genotypically normal woman. a. Show the possible gametes that will be formed by this man if the translocated 15/21 chromosome synapses with chromosome 21 at Prophase I.Consider Cyclic Crossover on two Parent chromosomes: Parent1 = A0846172593B and Parent2 = 394B5721608A . Assume that Parent2 is the default and that crossover will occur at the data value in the 1st position. What will the child chromosome be?why The chromatids formedby recombination within the inversion loop of a paracentric inversionheterozygote are genetically unbalanced ?