Number of chromosomes in secondary oocyte stage in human is
$23$
$46$
$18$
$20$
Describe the process of oogenesis.
Androgen stimulates the $...A...$ FSH acts on the $...B...$ and stimulates factors for spermiogenesis. Here $A$ and $B$ refers to
Which is correct for oogenesis
The figure shows a section of human ovary. Select the option which gives the correct identification of either $A$ or $B$ with function/ characteristic.
$A$ : Middle piece of sperm is called powerhouse.
$R$ : It contains mitochondria.