$X$ -chromosome or $X$ - body was first observed by.............
Mendel $(1901)$
Castle $(1910)$
Henking $(1891)$
Bateson $(1906)$
What is heterogametic ? Explain by giving proper examples ?
The male human is represented by sex chromo-somes
Select the incorrect statement
Select the incorrect pair
The sex determination pattern in honeybee is called