4.6.3.6 Extinction

Question 1

What is extinction?

Answer 1

• when an entire species has died out

Question 2

What are the factors that can contribute to extinction?

Answer 2

• changes in environment which the species can’t adapt fast enough to
• new predators may have evolved or migrated
• new disease arises and there are no resistant alleles
• compete with a species which has advantageous mutations for the same food source
• catastrophic event
• destruction of habitat