Q56 of 167 Page 210

Select the incorrect statement from the following:

Reduction in the weight of an organism due to starvation is genetically controlled.

This statement is incorrect/false. Reduction in weight due to starvation is a result of less amount of food consumed and is not genetically controlled.

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54

One of the following traits of the parents cannot be passed on to their future generations. This trait is:

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Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution, this means that:

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New species may be formed if:

(i) DNA undergoes significant changes in germ cells


(ii) Chromosome number changes in the gamete


(iii) There is no change in the genetic material


(iv) Mating does not take place

 58

According to the evolutionary theory, formation of a new species is generally due to: