Initial clue about the genetic/chromosomal mechanism of sex-determination can be traced back to some of the experiments carried out in
Human beings
Birds
Insects
Plants
Describe the process of sex determination in humans.
Sex determination in Drosophila melanogaster is based on
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.
Heterogametic male condition does not occur in
In man, the composition of female destined zygote is