What type of sex determination is observed in grass hopper ?
$XX -XY$ type
$XX -XO$ type
$ZZ -ZW$ type
$ZZ -ZO$ type
$A$ : $XO$ type sex determination is found in large number of insects.
$R$ : Some of the sperms bear the $X-$chromosome whereas some do not
A man receives his $X$ chromosomes from
Match following pair.
What is heterogametic ? Explain by giving proper examples ?
In man, the composition of female destined zygote is