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  • Select the incorrect statement  (a) Frequency of certain genes in a population change over several generations resulting in evolution  (b) Reduction in weight of the organism due to starvation is genetically controlled

Select the incorrect statement 
(a) Frequency of certain genes in a population change over several generations resulting in
evolution 
(b) Reduction in weight of the organism due to starvation is genetically controlled 
(c) Low weight parents can have heavy weight progeny 
(d) Traits which are not inherited over generations do not cause evolution

Answers (1)

Answer: (b)

Solution:
(a) The change in the heritable characteristics of biological populations over successive generations is called Evolution. So frequency of certain genes in a population change over several generations resulting in evolution. Hence the statement is correct.
(b) Low weight is not a trait that is genetically controlled or inherited. So, the weight reduction due to starvation will not change the DNA of the germ cells. Hence the statement is incorrect.
(c) As discussed in option (b), Low weight is not a trait that is genetically controlled or inherited. Hence, low weight parents may have heavy weight progeny. Hence the statement is correct.
(d) The change in the heritable characteristics of biological populations over successive generations is called Evolution. Traits which are not inherited, i.e., the acquired traits are simply changes in non-reproductive tissues, so, cannot be passed on to DNA of germ cells. Hence the statement is correct.
Therefore, option (b) is correct.

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