Chapter 14.4 Mutations

What is a mutation?

• A change in the weather

• A heritable change in genetic information (DNA)

• A type of food

• A form of exercise

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NGSS.HS-LS3-2

NGSS.HS-LS4-2

Which type of mutation involves changes in a single gene?

• Chromosomal Mutation

• Gene Mutation

• Environmental Mutation

• Chemical Mutation

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NGSS.HS-LS3-2

What is a point mutation?

• A mutation that occurs at multiple points in the DNA sequence

• A mutation that occurs at a single point in the DNA sequence

• A mutation that affects the entire chromosome

• A mutation that does not affect the DNA sequence

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NGSS.HS-LS3-2

Which of the following is a type of point mutation?

• Translocation

• Inversion

• Substitution

• Duplication

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NGSS.HS-LS3-2

What happens during a substitution mutation?

• One base is changed to a different base

• A single extra base is added into the code

• A single base is removed from the code

• A segment of DNA is exchanged between chromosomes

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NGSS.HS-LS3-2

What is a frameshift mutation?

• A mutation that does not affect the reading frame

• A mutation that shifts the reading frame, changing every amino acid that follows

• A mutation that only affects the first amino acid

• A mutation that duplicates a segment of DNA

Tags

NGSS.HS-LS3-2

Which type of mutation involves changes in the number or structure of chromosomes?

• Gene Mutation

• Chromosomal Mutation

• Point Mutation

• Frameshift Mutation

What is gene translocation?

• The removal of a gene from a chromosome

• The duplication of a gene on a chromosome

• The exchange of DNA segments between nonhomologous chromosomes

• The inversion of a gene within a chromosome

What are mutagens?

• Agents that repair DNA

• Agents in the environment that can change DNA

• Agents that stabilize DNA

• Agents that duplicate DNA

Tags

NGSS.HS-LS3-2

Which of the following is NOT a type of chromosomal mutation?

• Deletion

• Duplication

• Substitution

• Inversion