Genetics Mutations Brianpop

In the movie, Tim says that genetic mutations are permanent changes to DNA or RNA. What does this mean?

• The changes are minor

• The changes can't be undone.

• The changes are major.

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Which of the following traits is encoded in your DNA?

• Your personality

• Your likes and dislikes

• Your eye color

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What types of living organisms have NO genetic material at all?

• insects

• bacteria

• All living organisms have genetic material

Why do most changes to DNA have no effect at all?

• Because the changes only occur in a few cells

• Because the changes are quickly repaired

• Because the changes are offset by RNA, which cannot change

Which word describes the majority of permanent genetic mutations?

• helpful

• minor

• injurious

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What usually happens to a cell whose DNA has been damaged?

• It has trouble manufacturing certain proteins

• Its genetic material leaves the nucleus

• It is able to produce twice as many proteins as a normal cell

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How are cancerous cells different from normal cells?

• Cancerous cells are shaped differently than normal cells

• Cancerous cells divide more frequently than normal cells

• Cancerous cells contain chemicals not found in normal cells

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

• When an organism's lifespan becomes shorter

• When an organism becomes unable to reproduce

• When an organism develops immunity to a disease.

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When a beneficial mutation spreads through an entire population of organisms, that population:

• is beneficial

• has evolved

• goes extinct

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When do random, or spontaneous, mutations happen?

• During cell division

• When cells are exposed to hazardous chemicals

• When cells are exposed to certain viruses

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