mutations_brain pop

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

• changes are minor

• changes can't be undone

• the changes are major

• the changes can be undone

Which of the following traits is encoded in your DNA?

• your personality

• your intelligence

• your like and dislikes

• your eye color

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

• insects

• bacteria

• plants

• all living organisms have genetic material

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

• because they are too minor to have an effect at all

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

• because the changes are quickly repaired

• because the changes only occur in a few cells

Which word describes the majority of permanent genetic mutations?

• helpful

• minor

• injurious

• beneficial

what usually happens to a cell whose DNA has been changed

• it has trouble manufacturing certains proteins

• its genetic material leaves the nucleus

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

• it shrinks to half its normal size

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

• cancerous cells nee more oxygen than normal cells

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

• when an organism's life span becomes shorter

• when an organism become unable to reproduce

• when an organism's body becomes deformed

• when an organism develops immunity to a diseases

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

• is beneficial

• has evolved

• goes extinct

• keep mutating

When do random, or spontaneous, mutations happen?

• during cell division

• when cells are exposed to hazardous chemicals

• when cells are exposed to certain viruses

• when cells are exposed to radiation