Genetic Mutation Worksheet
Explore the fundamentals of genetic mutations, their causes, types, and effects on living organisms for Grade 9 Science.
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Genetic Mutation Worksheet
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. What is a genetic mutation?
A change in the environment affecting an organism's behavior.
A permanent change in the DNA sequence of an organism.
The process of genetic recombination during meiosis.
The expression of a dominant allele.
2. Which of the following is NOT a common cause of genetic mutations?
Exposure to radiation
Errors during DNA replication
Normal cell division (mitosis)
Exposure to certain chemicals
3. A point mutation involves a change in a single base pair.
4. Mutations that occur in body cells are called mutations, while those in reproductive cells are mutations.
5. All genetic mutations are harmful to an organism.
True
False
6. The double helix structure of DNA is maintained by hydrogen bonds between complementary base pairs.
True
False
7. Briefly describe the difference between a silent mutation and a missense mutation.
8. Explain how genetic mutations can lead to genetic variation within a population.
9. Examine the diagram of DNA below. If a point mutation occurred changing the third base pair from A-T to G-C, what type of mutation would this be and how might it affect the resulting protein?
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