LIFE SCIENCE

Detailed explanation-1: -Darwin defined evolution as “descent with modification, ‘’ the idea that species change over time, give rise to new species, and share a common ancestor. The mechanism that Darwin proposed for evolution is natural selection.

Detailed explanation-2: -Simply put, descent with modification means that traits are passed down from generation to generation and sometimes undergo changes or modifications over time. These changes may be caused by Natural Selection or even a mutation of DNA.

Detailed explanation-3: -Common descent is an effect of speciation, in which multiple species derive from a single ancestral population. The more recent the ancestral population two species have in common, the more closely are they related.

Detailed explanation-4: -We’ve defined evolution as descent with modification from a common ancestor, but exactly what has been modified? Evolution occurs when there is a change in the heritable information passed from one generation to the next.