Polar bodies are formed during
Identify $A, B, C, D$ and $E$ in given figure.
A single ejaculation contains $...A...$ to$...B..$. million spermatozoa. Semen has pH of $...C...$ to $...D....$ Its alkalinity helps to neutralize the acidity of urethra. Here $A,B, C$ and $D$ refers to
What is oogenesis? Give a brief account of oogenesis.
Release of sperm from the seminiferous tubules is called