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| 1. |
Explain the chromosal basis of *** determination in human beings???? |
| Answer» Male has XY chromosome and female has XX chromosome. Sperm determines the *** of the zygote , it contains half X and half Y chromosome. Female has both X chromosomes. When fertilisation occurs between them there are fifty percent chances that it is boy or girl.If ovum of the female receives X chromosome from sperm then then zygote will form of the girl, if it receives Y chromosome, then zygote will form of the boy | |