question_answer 38)

  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

Answer:

                  (b) The weight reduction due to starvation will not change the DNA of the germ cells, because low weight is not a trait that is genetically controlled or inherited. Thus, low weight parents may have heavy weight progeny. 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. Evolution results from change in frequency of genes in a population over several generations.