Biology 11
Mr. MBK Carmichael
Name: ____________________ Date: __________ Block: _____
Chapter 6 – Genetic Basis of Evolution
Read pages 174-176, 181-182, and 187-190
Use the text, sidebars, and illustrations to answer the questions below:
| What is the main source of genetic variation among individuals in a population?
What is a gene pool?
EVOLUTIONARY CHANGE
What are the 3 factors that bring about evolutionary change?
What is mutation?
Describe the two types of mutations?
What is genetic drift?
What are alleles? (use the definition from the glossary, then give an example)
Explain what you think it means for “allele frequencies in a population to change.” Give an example
What is migration (gene flow)?
SPECIATION
What is speciation?
What is a species?
What are the two ways in which a new species may arise? Describe each one.
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