A Guyanese research facility uses embryo splitting to clone cattle with desirable meat production traits. At which stage must the embryo be split to produce viable clones?

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Question

A Guyanese research facility uses embryo splitting to clone cattle with desirable meat production traits. At which stage must the embryo be split to produce viable clones?

Accepted Answer

At the early stage when cells are still totipotent — Award 1 mark for B. Totipotent cells can differentiate into any cell type and form a complete organism. Embryo splitting must occur at the early stage (usually 2-8 cell stage) before cell specialization begins. A is incorrect because specialized cells cannot form a complete organism. C is incorrect because splitting after implantation would damage the developing embryo. D is incorrect because organ formation indicates advanced differentiation.

Answer

When the embryo has formed organs

Answer

After implantation in the uterus

Answer

After the cells have specialized into different tissue types

Answer

At the early stage when cells are still totipotent

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