Describe the technique which is used for sex determination in foetus?

Compare spermatogenesis and oogenesis as to timing of the processes, and the number and type of cells finally produced.

Explain how the internal female and male reproductive structures develop from two different duct systems.

Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.

Describe the phases of the human sexual response.

Ovulation releases _________. a. the corpus luteum b. a primordial follicle c. a primary oocyte d. a secondary oocyte and first polar body

Label the early development stages shown in the following diagram.

What chromosomal abnormality can result from dispermy?

In the fertility awareness method of birth control, a woman gauges her monthly fertile period by monitoring changes in the consistency of her vaginal mucus. What kind of information does such a method provide about the likelihood of getting pregnant?

Why would paired external fertilization be preferable to group spawning?