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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
Sex is determined in humans by the sex chromosome of sperm.
b
Sex determination takes place at the time of fertilisation in humans.
c
Sex chromosomes do not determine the sex in honeybees.
d
Sex is determined in birds by the sex chromosome of sperm.
answer is D.
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