OBJECTIVE LIFE SCIENCE
EVOLUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following describes natural selection?
|
|
it acts on genetic material directly
|
|
|
it acts on existing physical traits
|
|
|
it forms new traits
|
|
|
it forms new genetic material
|
Explanation:
Detailed explanation-1: -So, the correct answer is ‘Individuals with the most favorable traits survive and reproduce’
Detailed explanation-2: -Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes). Natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection, or disruptive selection.
Detailed explanation-3: -The traits that confer an advantage to those individuals who leave more offspring are called adaptations. In order for natural selection to operate on a trait, the trait must possess heritable variation and must confer an advantage in the competition for resources.
There is 1 question to complete.