The human sperms were first seen and discovered by

Extrusion of the second polar body from the egg nucleus occurs:

What are the cells of the germinal epithelium that transform into spermatozoa called?

Total number of primordial follicles which remain in the ovary of human females at the time of puberty are . . . . . . .

Which of the following observations does $NOT$ provide evidence that the pattern of cleavage is determined by factors in the egg cytoplasm rather than by the genes of the zygote?

After ovulation in the Graafian follicle,the ruptured Graafian follicle secretes .........