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Gestation period of 280 days is calculated from time of ...

A. Last menstruation

B. Fertilization

C. First day of last menstruation

D. Ovulation

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  1. The gonadotropic hormones are secreted by
  2. A child's blood group is 'o'. The parent's blood groups cannot be
  3. Hormones that control the growth and maturation of graffian follicle is
  4. The embryonic stage that resembles a mulberry fruit is
  5. Level of estrogen and progesterone are minimum at the time of
  6. Cryptorchidism is ...
  7. Identical twins are also known as ..
  8. In a semen analysis, the following is not acceptable as normal
  9. Human embryo is enclosed by a sac called
  10. Third phase of embryo development is ...
  11. The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the:
  12. Corona radiata is held by...
  13. Which one is not the function of human placenta
  14. In menstrual cycle the secretory phase is also known as
  15. At the end of meiosis I, the Oocyte yields
  16. Name the pituitary hormone that regulates sertoli cells
  17. Which layer of embryo is formed first
  18. Erythroblastosis foetalis is caused by fertilization between the gametes of
  19. Membrane that gives protection to embryo from external shocks is
  20. Which one occurs first in the human embryo
  21. Embryonic connective tissue is formed from ..
  22. In humans female ovulation occurs during menstrual cycle
  23. Emergency contraceptives may prevent pregnancy if used within 72 hrs of
  24. Temperature in scrotum necessary for sperm formation is usually ...
  25. Combined Oral contraceptives prevent pregnancy by
  26. Fertilization is fusion of ..
  27. The pelvic inflammatory disease is common with which type of contraception?
  28. Epididymis is ...
  29. In infertility treatment the ovum is fertilized outside the body and injected into the uterus
  30. Secretion of testosterone is stimulated by