Genes Quiz

What is a gene?

• A type of cell

• A segment of DNA

• A type of protein

• A virus

Where are genes located in the human body?

• In the bloodstream

• In the mitochondria

• In the nucleus of cells

• In the lungs

What is the function of genes?

• They determine an organism's traits

• They help digest food

• They produce energy

• They protect against diseases

Which molecule carries genetic information?

• RNA

• DNA

• Proteins

• Carbohydrates

How many chromosomes do humans typically have?

• 23 pairs

• 46 pairs

• 22 pairs

• 24 pairs

The passing of traits from parents to offspring is called:

• Evolution

• Heredity

• Mutation

• Reproduction

What is the term for different forms of a gene that can be inherited?

• Traits

• Mutations

• Genotypes

• Alleles

Which type of genes can mask the expression of other genes?

• Dominant

• Recessive

• Co-dominant

• Incomplete dominant

What is the likelihood of getting a trait if you inherit two dominant alleles?

• Very likely

• Somewhat likely

• Unlikely

• Impossible

Which genetic disorder results from having an extra chromosome 21?

• Down syndrome

• Cystic fibrosis

• Hemophilia

• Huntington's disease