Process by which favorable traits of an organism become more common in successive generations and unfavorable traits become less common?

Answer 1

Because individuals who have these favourable traits will give them them an advantage and therefore they are more likely to survive in their competition with other organisms and breed. Then when they breed, they pass these advantageous alleles onto their offspring which in turn gives them an advantage and they are more liekly to survive and pass it onto their offsprings and so on. Over time, the frequency of the advantageous alleles increases at the expense of the alleles that are less advantageous and therefore decrease so that's why favourable traits become more common in organisms over time.

Answer 2

This process is known as natural selection, a fundamental mechanism of evolution proposed by Charles Darwin. Natural selection is driven by the differential survival and reproduction of individuals with advantageous traits, leading to the gradual accumulation of beneficial characteristics in a population over time. Unfavorable traits are gradually eliminated from the gene pool as those possessing them are less likely to survive and pass on their genes to the next generation.

Answer 3

Natural selection.