Question

Which of the statements about variation is NOT true? Select one:

a. Variation is differences in the size, shape, or color etc. of a particular species.
b. Variation in a particular species allows for natural selection process to take place.
c. The amount of variation of a particular trait does not affect how quickly a trait evolves.
d. Variation is necessary for a trait to evolve over time.

Answer 1

Variation is necessary for a trait to evolve over time. Natural selection can only occur if there is variation among individuals, allowing for the selection of advantageous traits. Processes such as mutation, sexual reproduction, and migration contribute to genetic variation and influence the overall process of evolution.

Step-by-step explanation:

The statement that is NOT true is c. The amount of variation of a particular trait does not affect how quickly a trait evolves. Variation is necessary for a trait to evolve over time. Natural selection can only occur if there is variation among individuals in a population, allowing for the selection of traits that provide an advantage for survival and reproduction. Additionally, variation is the result of processes such as mutation, sexual reproduction, and migration, which introduce genetic variance and influence the overall process of evolution.

Answer 2

c. The amount of variation of a particular trait does not affect how quickly a trait evolves.

Step-by-step explanation:

Variation is the diversity observed within a species. In a species all the organisms are not identical. They can vary in different characteristics like shape, size or colour. Variation can lead to natural selection because a particular variant of a trait can be favoured over the other ones and eventually it becomes dominant in the population.

Evolution of a trait is also effected by the amount of variation present in that trait. More the variation, more different will be its response to the changing environment and more time can be required to incorporate these changes within an organism.