AP BIOLOGY

Detailed explanation-1: -Evolution – change over time. It is the process by which modern organisms have descended from ancient organisms. Current scientific facts, observations and hypotheses all combine to create current evolutionary theory – which is a well-supported, testable explanation of the biological diversity on Earth.

Detailed explanation-2: -Darwin and scientists today have discovered that the ancient organisms whose remains they find look like organisms alive today because they are the living organisms’ ancestors or evolved from a common ancestor. For example, megatherium was probably an ancient ancestor of tree sloths that exist today.

Detailed explanation-3: -Natural selection is the process through which species adapt to their environments. It is the engine that drives evolution.

Detailed explanation-4: -Charles Darwin was a British naturalist who proposed the theory of biological evolution by natural selection. Darwin defined evolution as “descent with modification, ” the idea that species change over time, give rise to new species, and share a common ancestor.

Detailed explanation-5: -The Modern Synthetic Theory of Evolution (also called Modern Synthesis) merges the concept of Darwinian evolution with Mendelian genetics, resulting in a unified theory of evolution. This theory is also referred to as the Neo-Darwinian theory and was introduced by a number of evolutionary biologists such as T.