Question

a) Write the steps involved in multiple ovulation and embryo transfer.
b) Differentiate between out crossing and cross breeding.

Answer 1

Outcrossing	Cross breeding
Mating of the animals from the same breed.	Mating of the animals from the different breed.
They have no common ancestor and may belong to the same species.	They do not have a common ancestor and belong to the different species.
It is done to help in overcoming breeding depression.	It is done to combine the superior qualities of the male and female.

a) Multiple ovulation and embryo transfer is the method in which the mother is superovulated and then artificial insemination is practised. The mother is injected with the hormone FSH which results in the production of many eggs. These eggs are removed surgically and then artificial insemination is performed. The fertilised eggs are cultured till the 16-32 celled stage and then implanted into the uterus of the surrogate mother in the case of humans. MOET is commonly practised in the cattle as a part of breeding to produce superior quality of offsprings.