Mutations Quiz

What is a mutation?

• A change in genetic material

• A change in the number of chromosomes

• A change in the shape of red blood cells

• A change in the number of DNA bases

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Which of the following can have mutations?

• Animals, plants, fungi, protists, bacteria, and viruses

• Only humans and animals

• Only plants and fungi

• Only bacteria and viruses

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What can make mutations more likely to occur?

• External factors like chemicals and radiation

• Internal factors like DNA replication

• Both external and internal factors

• Mutations are always random

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What is a frameshift mutation?

• A mutation that changes the reading frame of codons

• A mutation that alters the amino acid sequence

• A mutation that affects DNA replication

• A mutation that causes a problem with meiosis

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Which of the following is an example of a chromosomal mutation?

• Duplication

• Substitution

• Insertion

• Deletion

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What is nondisjunction?

• When chromosomes don't separate completely during meiosis

• When chromosomes break off and attach to another chromosome

• When extra copies of genes are generated

• When a base is added or removed in DNA

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What is sickle cell anemia?

• A disorder that affects the shape of red blood cells

• A disorder caused by excessive radiation

• A disorder that affects DNA replication

• A disorder that alters the amino acid sequence

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What is the role of genetic counselors?

• To help families affected by genetic disorders

• To study mutations in fruit flies

• To treat sickle cell anemia

• To prevent malaria

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What happens if an individual inherits one copy of the mutated gene for sickle cell anemia?

• They become a carrier but don't have the disease

• They develop severe symptoms of sickle cell anemia

• They become immune to malaria

• They have a higher risk of developing cancer

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What is the main message of the video?

• Mutations can have harmful, helpful, or neutral effects

• Mutations are always intentional

• Fruit flies are the most studied organisms for mutations

• Genetic counselors are responsible for genetic research

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