Genetics Quiz

Who is the father of genetics?

• Darwin

• Mendel

• Watson

• Crick

What is a gene?

• A kind of protein

• A unit of heredity

• A mutation

• A chromosome pair

Which allele is shown with a capital letter?

• Recessive

• Dominant

• Mutated

• Homozygous

Which describes “tt”?

• Homozygous dominant

• Homozygous recessive

• Heterozygous

• Codominant

Which describes “Tt”?

• Homozygous

• Heterozygous

• Recessive

• Codominant

Which term means the physical expression of a trait?

• Genotype

• Phenotype

• Allele

• Chromosome

Which cross shows only recessive offspring?

• TT × TT

• Tt × Tt

• tt × tt

• TT × Tt

Which best describes alleles?

• Different versions of a gene

• A chromosome copy

• A DNA mutation

• Protein instructions

What does “monohybrid cross” mean?

• Crossing one trait

• Crossing two traits

• Crossing three traits

• Crossing chromosomes

In a Tt × Tt cross, how many offspring are short?

• 0

• 1

• 2

• 3