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(a) In humans, males are heterogametic a...

(a) In humans, males are heterogametic and frmales are homogametic, Explain. Are there any examples where males are homogametic and females heterogametic?
(b) Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.

Text Solution

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(a)Refer .sex determination. of chapter 5. (b)Sex of unborn child is determined by male,as it forms (A+Y) or (A+X) types of male gametes for fertilization with ovum .
Temprature does not not affect the sex in humans.However,in crocodiles low temprature can induce femaleness.Temprature affecting sex has also been noticed in turtles.
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