Mutations

What is a mutation?

• A substance that increases mutation rates.

• A spontaneous and random change in genetic material.

• A new genetic material created by a mutation.

• A cell that repairs DNA damage.

Which of the following best describes a mutagen?

• A substance that prevents mutations.

• A cell that undergoes mutation.

• A substance that causes or increases mutation rates.

• A type of DNA sequence that remains unchanged.

What is a mutant?

• A new genetic material produced by mutation.

• A substance that triggers DNA damage.

• A method of correcting genetic errors.

• A normal, unchanged organism.

Which of the following is true about mutations in germ cells and somatic cells?

• Mutations in germ cells cannot be passed to offspring.

• Mutations in somatic cells can be inherited by the next generation.

• Mutations in germ cells can be inherited, while mutations in somatic cells cannot.

• Both germ cell and somatic cell mutations are always inherited.

What type of gene mutation can cause thalassemia?

• Base deletion.

• Base addition.

• Base substitution.

• Chromosomal inversion.