Question

Explain how having a advantageous heritable trait will increase in a population and those who lack it will decrease in numbers.

Answer 1

If a trait is advantageous, it means that organisms possessing the trait are more likely to survive and reproduce - passing this trait onto offspring so that it becomes more common in future generations. Individuals without the survival advantage are less likely to survive and reproduce to pass the trait onto offspring.

Answer 2

That is, the differential survival and reproduction of organisms in a population that have an advantageous heritable trait leads to an increase in the proportion of individuals in future generations that have the trait and to a decrease in the proportion of individuals that do not