Question

Which of the following statements concerning sexual differentiation is correct?

	(a)    By the sixth week of life, it is possible to distinguish the gender of the fetus
	(b)    The fetus is programmed to develop as a male unless two XX chromosomes are present
	(c)    The Mullerian duct differentiates into the male accessory sex glands
	(d)    The female sexual differentiation occurs later than that of the male
	(e)    All above statements are correct

A glomerulus is

	a)    the expanded end of a nephron.
	b)    a "knot" of capillaries that lies within the Bowman's capsule.
	c)    the portion of the nephron closest to the renal corpuscle.
	d)    the portion of the nephron that attaches to the collecting duct.
	e)    the hairpin-shaped segment of the nephron.

Vitamin B₁₂ deficiency may result from

	e) high dietary intake of phosphates
	b) ileal resection
	d) inadequate consumption of fresh fruits and leafy green vegetables
	c) total gastrectomy and ileal resection
	a) total gastrectomy

Answer 1

Answer:(a)by the sixth week of life,it is possible to distinguish the gender of the fetus.

Reason:

Answer:(b) a knot of capillaries that lies within the Bowman's capsule.

Reason:

Answer:(b)illeal resection.

Reason: