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Animal Breeding and Embryo Technology
Concepts tested here
- Embryo splitting
All Questions
2007 AIPMT-PRE 1 question
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In cloning of cattle, a fertilized egg is taken out of the mother's womb andIn this method of cloning cattle (embryo splitting), a fertilised egg is taken out of the womb of the mother.
The egg is allowed to divide, and at the eight-cell stage the cells are still totipotent.
The cells are separated from one another and each is cultured in a nutrient medium until it grows into a small embryo.
These embryos are then implanted into the wombs of other cows (surrogate mothers), where they complete their development.
All the calves produced are genetically identical to one another, since they come from the same fertilised egg.
The separated cells are not implanted directly as single cells or pairs of cells, and they are not separated under an electric field.
So the correct description is that at the eight-cell stage the cells are separated and cultured until small embryos are formed, which are implanted into the womb of other cows.