Genetics & Heredity

What is the main function of DNA?

• Producing energy for cells

• Carrying genetic instructions for traits

• Breaking down food

• Fighting off diseases

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How many pairs of chromosomes do humans have?

• 21 pairs

• 22 pairs

• 23 pairs

• 24 pairs

In genetics, what term describes different versions of the same gene?

• Chromosomes

• Alleles

• Nuclei

• Proteins

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Which pattern of inheritance occurs when both alleles are expressed equally?

• Complete dominance

• Incomplete dominance

• Codominance

• Partial dominance

A capital letter (B) represents what type of allele?

• Recessive

• Dominant

• Neutral

• Mixed

What tool do geneticists use to predict genetic combinations in offspring?

• DNA strand

• Gene map

• Punnett square

• Chromosome chart

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Who is considered the "father of genetics"?

• Charles Darwin

• Gregor Mendel

• Louis Pasteur

• Robert Hooke

What describes the shape of DNA?

• Straight line

• Circle

• Double helix

• Square

About how many genes do humans have?

• 2,000

• 20,000

• 200,000

• 2,000,000

Which factor can influence how genes are expressed?

• Environment

• Weather

• Time of day

• Season

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