The second maturation division of the mammalian ovum occurs:
- Ashortly after ovulation before the ovum makes entry into the Fallopian tube
- Buntil after the ovum has been penetrated by a sperm
- Cuntil the nucleus of the sperm has fused with that of the ovum
- Din the Graafian follicle following the first maturation division
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Oogonia arise from the endoderm of the . . . . . . .
Given below are two statements:
$Statement-I$: At the onset of puberty, the pituitary gland begins secretion of gonadotropin releasing hormone.
$Statement-II$: $GnRH$ initiates the significant increase in the secretion of follicle stimulating hormone $(FSH)$ which induces gametogenesis.
In light of above statements, choose the correct appropriate answer from the options given below.
$Statement-I$: At the onset of puberty, the pituitary gland begins secretion of gonadotropin releasing hormone.
$Statement-II$: $GnRH$ initiates the significant increase in the secretion of follicle stimulating hormone $(FSH)$ which induces gametogenesis.
In light of above statements, choose the correct appropriate answer from the options given below.
Hyaluronidase helps the sperm to enter the ovum. Where is it located?
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View SolutionWhich type of cell division forms spermatids from the secondary spermatocytes?
Medium
View SolutionThe longest phase of spermatogenesis is......
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