Genetics Quiz: Punnett Squares

If a plant has the following alleles, HH, it is considered _________________.

• homozygous recessive

• homozygous dominant

• heterozygous

• tall plant

If a plant has the following alleles, hh, it is considered _________________.

• homozygous recessive

• homozygous dominant

• heterozygous

• tall plant

A heterozygous pair of alleles would be represented by what?

• two capital letters

• two lower-case letters

• one capital and one lower-case letter

Recessive alleles are usually represented by

• A) capital letters

• B) lower-case letters

• C) it depends on the trait

Dominant alleles are usually represented by

• A) capital letters

• B) lower-case letters

• C) it depends on the trait

What does each box in a Punnett square represent?

• A parental genotype

• A possible genotype of offspring

• A genetic mutation

• A possible phenotype of offspring

On the outside of a Punnett square box, the alleles represent what?

• A) genotypes of parents

• B) genotypes of possible offspring

• C) phenotypes of parents

• D) phenotypes of possible offspring

On the inside of a Punnett square box, the alleles represent what?

• A) genotypes of parents

• B) genotypes of possible offspring

• C) phenotypes of parents

• D) phenotypes of possible offspring

What is the genotype of a pea plant that is heterozygous for seed shape?

• rr

• Rr

• RR

• rR

What is the genotype of a pea plant that is homozygous recessive for seed shape?

• rr

• Rr

• RR

• rR

Tags

NGSS.HS-LS3-2