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4 September, 22:08

Given that the horse has a diploid chromosome number of 64 and a zebra has a diploid chromosome number of 46, what would be the expected chromosome number in the somatic tissues if a viable hybrid were possible between these two animals

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  1. 5 September, 01:06
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    Answer: 55

    The expected chromosome number in the hybrid would be 55

    Explanation:

    To obtain the hybrid organism:

    - the diploid (2n) cell of horse will undergo meiosis to produce a gamete with halved chromosome. This gamete is with haploid number (n)

    Thus, 64 / 2 = 32

    - the diploid (2n) cell of Zebra will undergo the same pattern as the horse

    Thus, 46 / 2 = 23

    Then, the gametes of the two animals will be fused to form a zygote of the hybrid.

    32 + 23 = 55

    Hence, the zygote will form a diploid hybrid organism with an expected chromosome number of 55
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