Definitions / Explanation : Sex determination
 

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The establishment of sex through differential development in an individual at the time of zygote formation is called sex determination.

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Sex determination in Drosophila melanogaster is based on

  • [AIEEE 2004]

There are five daughters and no son in a family. It may be due to

What type of sex determination is observed in grass hopper ?

Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.

Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

  • [AIIMS 2017]