Biology
Grade-10
Easy
Question
If in mice the Igf2 gene gets deleted from a female parent, then the progeny will _____________.
Be dwarf
Be larger in size
Die
Remain unaffected
Be dwarf
Be larger in size
Die
Remain unaffected
Hint:
Remain unaffected
The correct answer is: Remain unaffected
The activity of the IGF2 gene depends on which parent it was inherited from. Only the copy inherited from a person's father (the paternally inherited copy) is active; the copy inherited from the mother (the maternally inherited copy) is not active.
Hence, the progeny remains unaffected if igf2 is deleted from the female parent as it already was in the dormant state.
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