Male child will be born if
Father is sexually more excited
Sperm of male with $Y$ chromosome fertilizes the egg
Sperm of male with $X$ chromosome fertilizes the egg
None of the above
Bird females have chromosome arrangement as
How is sex determined in Honey bee ?
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.
In man the normal number of chromosomes is
Match following pair.