8 - Unit 3, Section 3 - Day 1

Evolution and Domestication

Unit 3, Section 3

Match

Match the following vocabulary terms to their corresponding definitions.

• Mutation

• Genetic Variation

• Natural Selection

• Evolution

A random change in an organism's DNA

The presence of different alleles

Better-adapted organisms survive

Long-term change in a species over time

• A random change in an organism's DNA

• The presence of different alleles

• Better-adapted organisms survive

• Long-term change in a species over time

Evolution - the change in physical traits of a species over successive generations

• Due to the presence of genetic variation

• Caused by natural selection

Evolution

• It isn't always slow!

  • Some evolutions (like lactose intolerance in humans) can occur in less than 10,000 years

• It isn't always naturally-occurring!

  • Humans can guide the evolution of organisms to better suit their needs

• Not every evolved trait has an easy explanation!

  • That's like saying "The human nose evolved to hold glasses"

• An entire species doesn't have to evolve in the some way!

  • Let's look at finches!
    

Misconceptions about evolution