MCQ
Genetic engineering has been successfully used for producing:
- AAnimals with inferior traits.
- ✓Transgenic mice for testing safety of polio vaccine before use in humans
- CAnimals that have the same genetic constitution.
- DNone of the above
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$I.$ $A$ might be before $B$ and $C$
$II.$ $B$ might be between $A$ and $C$
$III.$ $C$ might be between $A$ and $B$
$IV.$ More crosses has occurred between $A$ and $C$ than $A$ and $B$