Q7 of 47 Page 73

The maleness of a child is determined by

The maleness of a child is determined by the Y-chromosome in zygote inherited from the father. If X-chromosome is inherited from the father, the zygote will develop into girl.

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5

If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant, (rr YY) the seeds produced in F1 generation are

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In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are

I. large chromosome


II. small chromosome


III. Y-chromosome


IV. X-chromosome

 8

A zygote which has an X-chromosome inherited from the father will develop into a

 9

Select the incorrect statement