Exploring Genetic Mutations

What is a genetic mutation?

• A temporary change in a cell's structure

• A permanent change in a cell's DNA or RNA

• A reversible change in a cell's function

• A temporary change in a cell's RNA only

What are DNA and RNA?

• Chemical blueprints for the body

• Proteins that control cell functions

• Hormones that regulate growth

• Enzymes that repair cells

Which of the following is completely controlled by genes?

• Height

• Skin tone

• Eye color

• Weight

What usually happens to most genetic changes?

• They become permanent mutations

• They are corrected by DNA repair

• They cause diseases

• They improve cell function

What is the result of deleterious mutations?

• Improved cell function

• Uncontrolled cell growth

• Temporary cell changes

• Enhanced protein production

What causes sickle-cell anemia?

• A small mutation in a protein encoding gene

• A mutation in DNA repair enzymes

• A mutation in RNA

• A large mutation in a protein encoding gene

How do beneficial mutations affect organisms?

• They help organisms survive better

• They cause diseases

• They always lead to cancer

• They have no effect

What is one of the driving forces of evolution?

• Environmental changes

• Deleterious mutations

• Beneficial genetic mutations

• Random cell division

How can genetic mutations occur?

• Only through chemical exposure

• Spontaneously or due to external factors

• Only during cell division

• Only through external factors

Which of the following is NOT a cause of genetic mutations?

• Radiation

• Viruses

• Chemicals

• DNA repair