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14/09/2021 4:59 pm
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How is the equal genetic contribution of male and female parents ensured in the progeny?
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14/09/2021 5:00 pm
Individually both male and female parents possess 23 pairs of chromosomes, i.e. they have a total of 46 chromosomes. During gametes formation, this diploid chromosome number gets halved. The female gamete has 22 + X chromosomes and the male gamete has 22 + X or 22 + Y chromosomes. When the female and the male gametes fuses, the diploid condition again get restored in the zygote.
The zygote has 44 + XX or 44 + XY chromosomes.
In this way, the equal genetic contribution of male and female parents is ensured in the progeny.