Genetics Quiz

Who is known as the Father of Genetics?

• Isaac Newton

• Charles Darwin

• Albert Einstein

• Gregor Mendel

What is a trait?

• A type of cell

• A type of gene

• A type of plant

• A specific characteristic that varies from one individual to the next

What is the genotype of an individual who is heterozygous for a trait?

• TT

• Tt

• tt

• None of the above

What is the principle of dominance?

• Both alleles are recessive

• One allele is recessive to another

• Both alleles are dominant

• One allele is dominant to another

What is the physical appearance of an individual called?

• Genotype

• Homozygous

• Heterozygous

• Phenotype

What is the principle of segregation?

• Alleles must mutate when gametes form

• Alleles must combine with each other when gametes form

• Alleles must stay together when gametes form

• Alleles must separate from each other when gametes form

What did Mendel's results lead him to conclude about genes?

• A gene is a unit that determines a trait

• A gene is a unit that determines a plant

• A gene is a unit that determines a species

• A gene is a unit that determines a cell

Genotype: rr

• homozygous dominant

• homozygous recessive

• heterozygous dominant

Genotype: TT

• homozygous dominant

• homozygous recessive

• heterozygous dominant

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

• 1/4

• 2/4

• 3/4

• 4/4