Why offsprings of blind couple are not blind?
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Answer: Blindness is not an inherited trait but is accquired and is just a physical defect. It is not coded in the DNA and hence does not get passed on to the next generation.
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It's is not that offsprings of a blind is born as a blind because the offspring would have inherited the traits of is grand father who would have not been a blind
And some the parent would have become blind by some accident so in that case blindness will not be a inherited trait
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