Speciation

Question 1

What is speciation?

Answer 1

• the evolutionary formation of new species that are genetically distinct from the older parental species

Question 2

What is speciation most often due to?

Answer 2

• cladogenesis

Question 3

What is cladogenesis?

Answer 3

• when one species divides into 2 or more species

Question 4

What is extinction?

Answer 4

• the permanent loss of all members of a species

Question 5

Why are genotypic variations important?

Answer 5

• they increase a species’ chance of adapting and thus surviving under different conditions

Question 6

What are the two major types of speciation?

Answer 6

• geographic (allopatric)
• sympatric

Question 7

What is geographic speciation due to?

Answer 7

• due to part of the population becoming isolated

Question 8

When does sympatric speciation occur?

Answer 8

• in a population that occupy the same geographical area