The primary oocyte divides to produce:

1.	A large diploid secondary oocyte and a small haploid first polar body
2.	A large haploid secondary oocyte and a small haploid first polar body
3.	A large diploid secondary oocyte and a small haploid second polar body
4.	A large haploid secondary oocyte and a small haploid secondary polar body

What is the advantage of the descent of testes in humans from the lower abdomen to the scrotum?

Consider the two statements:

 
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. Only I is correct.
4. Both I and II are incorrect.

The most accurate sequence of hormones secreted during a typical menstrual cycle will be:

During embryonic development, which of the following structures actually differentiates into the embryo?

Which of the following hormones is not secreted by the human placenta?

After implantation, finger like projections appear on the trophoblast cells called:

The signals of fetal ejection reflex originate from:

1. Maternal pituitary

2. Maternal hypothalamus

3. Fully developed fetus and placenta

4. Fetal pituitary

The first movements of the fetus and the appearance of hair on the head are usually observed during:

During pregnancy, the levels of thyroxin:

1. Increase several folds in maternal blood

2. Increases several folds in fetal blood

3. Decreases several folds in maternal blood

4. Decreases several folds in fetal blood