The second maturation division of the mammalian ovum occurs

Options

(a) shortly after ovulation before the ovum makes entry into the fallopian tube
(b) until fater the ovum has been penetrated by a sperm
(c) until the nucleus of te sperm has fused with that of the ovum
(d) in the graffian follicle following the first maturation division

Correct Answer:

until fater the ovum has been penetrated by a sperm

Explanation:

In Oogenesis, the second maturation division occurs until after the ovum has been penetrated by a sperm. Oogenesis involves the formation of haploid female gametes, ova, from this diploid egg mother cells, oogonia of ovary of female organism.