AP BIOLOGY

Detailed explanation-1: -Darwin’s theory of evolution describes evolution as a slow, gradual continuous process of change. This could mean that evolutionary changes could occur over thousands or hundreds of thousands of years. It is so gradual that one cannot detect these changes in a lifetime, or even over several generations.

Detailed explanation-2: -CORRECTION: Evolution occurs slowly and gradually, but it can also occur rapidly. We have many examples of slow and steady evolution-for example, the gradual evolution of whales from their land-dwelling, mammalian ancestors, as documented in the fossil record.

Detailed explanation-3: -The small changes that occur during the long periods make the organisms competent to live in a particular environment. Mutation or variation of the genetic material can never occur fast. It takes time for the organisms to change according to the environment which makes these changes necessary but slow.

Detailed explanation-4: -Summary: Evolution is usually thought to be a slow process, something that happens over generations, thanks to adaptive mutations. But environmental change is happening very fast.

Detailed explanation-5: -In Darwin’s studies, it is said that natural selection only works by taking advantage of minor successive variations. It can never take a major and fast leap, but in gradual steps, it must continue rapidly and surely. So, according to Darwin, evolution is a slow, gradual, and continuous process of evolution.