Question

“Only variations that confer an advantage on an individual organism
__will survive in a population.” Justify this statement.
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Answer 1

Yes, I agree that Only variations that confer an advantage on an individual organism will survive in a population.

For example,

There is a group of beetles who are green in colour, in a jungle. Birds like beetles to eat but since the beetles are green they stick to the leaves and cannot be easily seen by the birds. Hence, they are a natural selection

Now consider another situation in which these beetles evolves within a span of years and becomes red. Now the beetles could be easily seen by the birds and are readily eaten. So, we can say the new variation in colour is a disadvantage and hence the beetles will not survive