Who demonstrated the acrosome reaction in Saccoglossus
F.R. Lillie $(1919)$
Colwin and Colwin $(1967)$
$(a)$ and $(b)$ both
None of the above
All extra embryonic membranes
If both ovaries are removed from a rat, then which hormone is decreased in blood
In humans, what is the ratio of the number of gametes produced from one male primary sex cell to the number of gametes produced from one female primary sex cell ?
In mammals the female secondary sexual characters are developed by the hormone