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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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kyrabunga kyrabunga
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6 years ago
A paracentric inversion heterozygote contains a normal chromosome with the long-arm gene order GENE and an inverted chromosome with the long-arm gene order GNEE. They form an inversion loop to pair during prophase I of meiosis.
 
  If a single crossover occurs between the G and the E segments of the loop, what will be the gene orders in the resulting recombinant dicentric chromosome and acentric fragment? Assume crossing over occurs at the four-strand stage involving two nonsister chromatids.
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6 years ago
The dicentric chromosome gene order will become GENG, and the gene order in the acentric fragment will become EENE.
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