Question

In cloning of cattle, a fertilized egg is taken out of the mother's womb and

• A. The egg is divided into 4 pairs of cells which are implanted into the womb of other cows.
• B. In the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows.
• C. In the eight cell stage, the individual cells are separated under electrical field for further development in culture media.
• D. From this, upto eight identical twins can be produced.

Answer 1

The correct option is B In the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows.

Cloning is the process in which the cells or the whole organisms can be cloned to produce multiple copies. Cloning is performed in the cattle. The fertilized egg is removed from the mother's womb and then cultured in the artificial medium. The egg is allowed to grow till the eight-celled stage and then the individual cells are separated. Thes cells are allowed to grow independently and then implanted into the womb of the surrogate mothers. This process is known as an artificial twinning method.

Thus, the correct answer is option B.