Life Science: Genetic Adaptation

The video explains genetic adaptation in animal populations, using the peppered moth in England as an example. Initially, light-colored moths were camouflaged against light tree bark, but industrial pollution darkened the bark, favoring darker moths. As pollution decreased, lighter moths became more common again. The video also discusses human influence on animal traits through selective breeding, using dog breeds as examples. The lesson concludes with a summary and encouragement for a life science test.

What was the initial color of most peppered moths in England, and why?

• Green, to mimic the leaves

• Red, to warn predators

• Light, to blend in with the light bark and lichens

• Dark, to blend in with the soot-covered trees

How did the peppered moth population change as the environment became more polluted?

• The moths became darker in color

• The moths developed spots

• The moths became lighter in color

• The moths grew larger

What is the significance of genetic diversity in the survival of a species?

• It allows for a variety of food sources

• It ensures that some individuals can survive environmental changes

• It leads to larger populations

• It prevents diseases

Why were Alaskan Malamutes bred with specific traits?

• To perform in dog shows

• To hunt small animals

• To pull sleds in cold weather

• To guard homes

What characteristic was bred into Dachshunds to help them hunt badgers?

• Long legs

• Short legs and muscular bodies

• Thick fur

• Sharp eyesight