Genetics Quiz

What is the study of DNA, including how traits are passed down from parents to offspring, known as?

• Ecology

• Genetics

• Anatomy

• Physiology

What are homologous chromosomes?

• Chromosomes that carry genes for different traits

• Pairs of chromosomes that carry genes for the same trait

• Single chromosomes that carry genes for height

• Chromosomes that do not carry any genes

How many alleles does each gene have in a typical human cell?

• 1

• 2

• 23

• 46

Which of the following can affect the expression of genes?

• The number of chromosomes

• The size of the cell

• The environment

• The structure of the chromosome

What is the correct order of organization from largest to smallest in genetic terms?

• DNA > Chromosomes > Nucleus > Cell

• Cell > Nucleus > Chromosomes > DNA

• Chromosomes > Cell > Nucleus > DNA

• Nucleus > Chromosomes > DNA > Cell

How many chromosomes do humans typically have?

• 23

• 46

• 92

• 44

What is the structure of a chromosome described as?

• Single-stranded twisted ladder

• Double-stranded twisted ladder

• Double-helix spiral

• Single-helix spiral

Which of the following is a correct pairing of nitrogenous bases in DNA?

• A=C

• G=T

• A=T

• C=A

Where does DNA replication take place?

• In the ribosomes

• In the nucleus

• In the mitochondria

• On the cell membrane

What is the role of ribosomes in protein synthesis?

• They replicate DNA.

• They synthesize amino acids.

• They make proteins.

• They attach nucleotides to DNA.