Genetic Variation Study Guide (393-396)
1. Define genetic variation in your own words and give 2 synonyms for it.
2. What are the 2 causes of genetic variation within a species?
3. Draw a picture of 3 individuals in a species of your choice and show the variation that is amongst them.
4. List 5 ways that individuals of lions can show variation.
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5. Why does nature favor or want variation within a species?
6. If all individuals in a species were exactly the same, do they have a low or high chance of survival if something
happens to their environment? Explain.
7. If all individuals in a species were exactly the same, could natural selection occur? Explain.
8. Population X consists of a group of hares (rabbits) that are genetically similar. Population Y consists of a group
of hares (rabbits) that are genetically varied. If they both live in the same habitat and something changes in their
habitat, which population is more likely to survive? Explain.
Genetic Variation Study Guide (393-396)
9. What is going to determine the number of phenotypes for a given trait? (395)
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A group of individuals of the same species that interbreed make up a _________________________.
The combined genetic information of all members of a population is its _________________________.
The two main sources of genetic variation are _________________________ and _________________________.
Natural selection will act on an organism’s _________________________.
When a trait is controlled by only single gene with two alleles it is known as a _________________________.
If a trait is controlled by 2 or more genes it is known as a _________________________.
_________________________ are the different versions of a gene.
Eye color, skin color, and hair color are all examples of a person’s _________________________.
An _________________________ is an inherited trait that will help an organism survive in its environment.
Differences within a population is due _________________________, which is the different genes present within
individuals.