Function of allantois in mammal is
Respiration only
Excretion
Nutrition, excretion and respiration
Protection from shocks
The concept that organiser is essential for embryonic development was given by or For the ‘Theory of organiser’, Nobel prize was given to
How many eggs will be formed from $100$ primary oocytes
From which layer of the embryo do the liver and pancreas develop
In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was
Which of the following undergoes spermiogenesis?