Which of the following diseases or disorders can be prevented by the application of the knowledge of heredity through marriage counselling?

Identical twins inherit their genes from?

A. the same ovum and different sperms B. the same sperm and different ova C. different sperms and many ova D. the same ovum and the same sperm E. many ova and many sperms Correct Answer: Option D – the same ovum and the same...

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