External stimulus which induces cleavage in an unfertilized ovum is called
Fertilization
Chemotaxis
Paedogenesis
Neoteny
Which of the following structure is lacking from the placenta
Seminiferous tubules develop central lumen after
Which of the embryo has parasite mode of nutrition.
Choose the correct combination of labelling the hormonal control of female reprodcutive system
Cryptorchidism is a condition in which