Meiosis of one human primary oocyte finally produces
Correct answer: C. one ovum and three polar bodies
- A. four functional ova
- B. two ova and two polar bodies
- C. one ovum and three polar bodies
- D. four polar bodies and no ovum
Explanation
Cytoplasmic division in oogenesis is deliberately unequal, so almost all the cytoplasm and stored food goes to one cell while the other products are tiny polar bodies that soon degenerate. This gives the single ovum the reserves an early embryo needs before implantation. Spermatogenesis, by contrast, divides the cytoplasm evenly and yields four functional sperm from each primary spermatocyte.
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About Human Reproductive System
The human reproductive system includes the male and female organs that produce gametes, secrete sex hormones and support fertilization and development. Questions cover the testes, ovaries, reproductive ducts, menstrual and ovarian cycles, ovulation, fertilization, implantation, placenta formation and the roles of FSH, LH, oestrogen, progesterone and testosterone.
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