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Mule - Hybrid of Horse & Donkey

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1. A stable polyploidy plant species was found that has 26 chromosomes, which form 13 bivalents in meiosis. Is it an autoploid or alloploid?

2. Horses have 64 chromosomes, while donkeys have 62. Hybrids between horses and donkeys are mules, and are sterile. If two mules mated, with each producing nondisjunction gametes, what would be the chromosome number of their offspring? Is this likely to occur?

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Solution Summary

Mules inherit 32 chromosome from female horse and 31 chromosome from male donkey. Hence, total 63 chromosomes are present in mule. Due to the presence of odd number of chromosome, normal pairing between homologous chromosome is not possible.

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BIO304 Homework #3 due October by 17, 2007

1. A stable polyploidy plant species was found that has 26 chromosomes, which form 13 bivalents in meiosis. Is it an autoploid or alloploid?

Ans : In autopolyploids, there is same set of chromosome however, in allopolyploid chromosome from two different species are involved. Hence, bivalent ...

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