The fact that mutations causing premature senescence are selected against weakly

Question

The fact that mutations causing premature senescence are selected against weakly makes more sense if we consider the trade-offs inherent between survival and reproductive success. Which of the below helps us understand this?

Mutations in individual cells may cause cell death, but this does not affect the rest of the organism.

Many mutations that cause cell death are, in fact, highly deleterious.

Individuals carrying a mutation causing death before reproductive maturity would have a lifetime reproductive success rate of zero.

Mutations causing death after reproduction has begun are selected against less strongly.

Senescence is an organic property of adaptation.

Explanation / Answer

Ans senescence is an organic property of adaptation.

As the mutations that cause premature senescence are selected against the weakly ones, suggesting that with due course of time and subsequent evolution, the aging and senescence process will be hastened in organisms . It is because these mutations are favoured and naturally selected.

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