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CBSE Class 10 Answered

a husband has 46 chromosomes ,his wife has 46 chromosomes. then why don't offspring have 46 pairs of chromosomes,which is obtained by the fusion of male and female gametes?support your answer with a neat illustration.
Asked by vasu cool | 20 Feb, 2014, 04:47: PM
Expert Answer

Every human cell has 23 chromosomes and is haploid .

The zygote is formed when the male nucleus (23 chromosome) unites with the female nucleus(23 chromosome) and the zygote formed is diploid (contains 23 pairs of chromosome).

 The zygote undergoes a series of mitotic cell division a process known as cleavage and results in haploid cells being formed and thus the number of chromosomes restored to 23 chromosomes
Answered by | 21 Feb, 2014, 04:06: PM
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