✓✗If an ovum of a woman has 23 chromosomes, the number of chromosomes in her primary oocyte and zygote formed after fertilisation will be, respectively,

✓✗Find the correct statements.
A. In human pregnancy, the major organ systems are formed at the end of 12 weeks.
B. In human pregnancy, the major organ systems are formed at the end of 8 weeks.
C. In human pregnancy, the heart is formed after one month of gestation.
D. In human pregnancy, limbs and digits develop by the end of the second month.
E. In human pregnancy, the appearance of hair is usually observed in the fifth month.
Choose the correct answer from the options given below.

✓✗Not all copulations lead to fertilisation and pregnancy because

✓✗The signals for parturition originating from the fully developed foetus and placenta induce mild uterine contractions called the

✓✗The edges of the infundibulum have finger-like projections called

✓✗A sample of 300 million ejaculated sperms is examined. For normal fertility, the minimum numbers of sperms with normal shape and with vigorous motility should be, respectively,

✓✗The anterior portion of the sperm head is covered by a cap-like structure called the

✓✗Which of the following correctly shows the sequence of follicle development in the ovary?

✓✗Which of the following is the correct sequence of events in parturition?

✓✗Each ovary is about

✓✗A man has 46 chromosomes in his somatic cells. The number of chromosomes in his primary spermatocyte, secondary spermatocyte and sperm are, respectively,

✓✗A woman takes no hormones and has a regular cycle. A blood test shows a very high LH level. She is most likely in the

✓✗What is the correct sequence of sperm formation?

✓✗After ovulation, the Graafian follicle regresses into the

✓✗Signals from the fully developed fetus and placenta ultimately lead to parturition, which requires the release of