Understanding DNA and Mutations

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

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What do harmful mutations do? (select two answers)

• Decrease chances of survival

• Increases changes of survival

• Decreases (goes down) likelihood of developing cancer

• Increases (goes up) likelihood of developing cancer

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

• Developing cancer

• Makes the organism faster

• Makes the organism a predator

• Develops sharp claws

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What do beneficial mutations do?

• Increases chances of survival

• Decreases changes of survival

• Increases chances of developing cancer

• Decreases skills

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

• Increases immunity to a disease

• Decreases immunity to a disease

• Increases weight gain

• Causes cystic fibrosis

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What is the definition of DNA mutation?

• The original DNA strand

• The strand with four pairs

• A change in the DNA strand

• The strand in a double helix

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Are all mutations bad?

• Yes

• No

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How can mutations affect an organism?

• They can only cause diseases

• They can have no effect, be beneficial, or be harmful

• They always improve the organism's abilities

• They only occur in plants

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Which of the following is a neutral mutation?

• A mutation that causes a disease

• A mutation that has no effect on the organism

• A mutation that increases survival chances

• A mutation that decreases survival chances

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What is true about mutations in organism?

• changes caused by mutations can be beneficial, harmful, or have no effect

• changes caused by mutations are always harmful

• changes caused by mutations are always beneficial

• changes caused by mutations will never effect the organisms cells

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