Exploring the Principles of Natural Selection

The video explains natural selection, a key concept in evolution, by exploring descent with modification and common descent. It highlights Charles Darwin's observations of species adaptation on the Galapagos Islands and compares natural selection to selective breeding. The video concludes by emphasizing how nature selects traits for survival, leading to complex life forms.

What is the observable fact that children often look and behave slightly different than their parents?

• Common Descent

• Natural Selection

• Descent with Modification

• Selective Breeding

What concept suggests that all life on Earth is related and descended from a common ancestor?

• Selective Breeding

• Descent with Modification

• Common Descent

• Natural Selection

Who discovered the concept of Natural Selection?

• Jean-Baptiste Lamarck

• Alfred Russel Wallace

• Charles Darwin

• Gregor Mendel

What did Darwin notice about the species on the Galapagos Islands?

• They were less complex than mainland species.

• They were specially adapted for island life.

• They were randomly different from mainland species.

• They were identical to species on the mainland.

What allows tortoises on smaller Galapagos islands to reach cactus pads?

• Dome-like shells

• Saddle-like shells

• Longer legs

• Shorter necks

What process have farmers used for thousands of years to create new domestic forms of plants and animals?

• Random Mutation

• Selective Breeding

• Genetic Engineering

• Natural Selection

What is the role of a farmer in the process of selective breeding?

• Cross-breeding different species

• Randomly mutating plants

• Selecting which traits to reproduce

• Creating new traits

What does nature do in the process of Natural Selection?

• Cross-breeds species

• Mutates organisms

• Selects which traits to keep

• Creates new traits

What is the main difference between Natural Selection and Selective Breeding?

• Natural Selection is a natural process

• Natural Selection is guided by humans

• Selective Breeding is random

• Selective Breeding occurs in the wild

What is the outcome of Natural Selection over multiple generations?

• Decreased biodiversity

• Increased fitness for survival

• Less complex organisms

• Random variations