LIFE SCIENCE

Detailed explanation-1: -Over time, these advantageous traits become more common in the population. Through this process of natural selection, favorable traits are transmitted through generations. Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species.

Detailed explanation-2: -Organisms with heritable (genetically determined) features that help them survive and reproduce in a particular environment tend to leave more offspring than their peers. If this continues over generations, the heritable features that aid survival and reproduction will become more and more common in the population.

Detailed explanation-3: -An adaptation is a physical or behavioural characteristic that helps an organism to survive in its environment. But not all characteristics of an animal are adaptations.

Detailed explanation-4: -In biology, an adaptation is ANY inherited characteristic that increases an organism’s chance for survival.

Detailed explanation-5: -Natural selection only acts on the population’s heritable traits: selecting for beneficial alleles and thus increasing their frequency in the population, while selecting against deleterious alleles and thereby decreasing their frequency. Scientists call this process adaptive evolution .