f an individual has a mutation that prevents degradation of Rec8, a protein that holds sister chromatids together during meiosis, this would most likely prevent _ (blank) _.
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Choose the correct option and explain the reasoning behind it: In the quest to understand the basis of infertility in humans, researchers have identified a mutation in a gene associated with chiasmata. This protein normally acts to promote homologous recombination. Why might a defect in homologous recombination have consequences for fertility? A. The chiasmata halts the whole process of meiosis, if crossover do not form properly. B. Crossover formation is a necessary step in meiosis I to ensure proper chromosome segregation C.A checkpoint requires a certain level of genetic variability for meiosis to proceed. D. Chiasmata are the connections between the centromeres and the centromeres that pull them to each pole of the daughter cells.
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Mutations in genes that affect meiosis have been identified in many different model organisms. Most of these mutations result in aneuploidy of more than a single chromosome and are nearly sterile. Explain why this is the case.
Kerissa B.
Inversion mutations cause fertilization issues because the chromosomes never line up during crossing over the chromosomes break and dissolve homologous recombination often results in non-viable gametes the individual cannot develop gonads
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