Question

In the 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 the 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 the other cows.
C.In the eight-cell stage, the individual cells are separated under the electrical field for further development in culture media.
D.From this, up to eight identical twins can be produced.

Answer 1

Hint: Cloning is a process where the cells of the organisms or the whole organisms are cloned which is done for the production of its multiple copies. This method is done in the cattle and is known as the artificial twining method.

Step by step answer:In the process of cloning the cells or the whole organism can be cloned to produce its multiple copies. The cloning process is performed in cattle’s, where the fertilized egg is removed from the mother's womb and it is then cultured in the artificial medium where the egg is allowed to grow until the eight celled stages and then the individual cells are separated, these cells are then allowed to grow independently and it is then implanted in the womb of the surrogate mother. This process of cloning of cattle is also known as the artificial twining method.
Hence, the correct option is ‘B

Note: In the process of cloning a fertilized egg divides into two, four and eight cells. Further the divided cell is called an embryo which is removed from the mother’s womb and embryonic cells are then separated using enzymes. These isolated cells are then kept in a nutrient medium and further implanted into the womb of the host mother cow.