Mendel Quiz

Mendel Quiz




1. If a heterozygous yellow pea is crossed with a green pea, what proportion of the offspring will be green?

a. none
b. 1/4
c. 1/2
d. 3/4


  2. If you cross two plants with blue flowers and get both blue and white-flowered plants in the next generation, you can conclude that

a. both parents are heterozygotes
b. blue is the dominant trait (B)
c. white should be symbolized b
d. all of the above


  3. Albinism is a recessive trait. If a brown mouse whose father was albino is mated with an albino mouse, what proportion of the offspring would be expected to be brown?

a. none
b. 1/4
c. 1/2
d. 3/4


  4. A monohybrid cross is carried out between parents of genotype Aa. What proportion of the offspring will look like their parents?

a. none
b. 1/4
c. 1/2
d. 3/4


  5. The genotype of a homozygote would be

a. aa
b. Aa
c. AB
d. bB


  6. Alternative forms of a gene that influence a given trait are

a. chromosomes
b. gametes
c. alleles
d. cistrons


  7. A red flower (RR) and a red flower (Rr) have the same

a. alleles
b. genotype
c. haplotype
d. phenotype


  8. If plants with orange berries (OO) are crossed with plants with yellow berries (oo), what kinds of offspring will result?

a. homozygous orange-fruited plants
b. homozygous yellow-fruited plants
c. heterozygous yellow-fruited plants
d. heterozygous orange-fruited plants


  9. In an organism of genotype Aa, half the reproductive cells carry ‘A’ and half carry ‘a’. Mendel called this phenomenon

a. segregation
b. dominance
c. recessiveness
d. independent assortment


  10. A homozygous brown rabbit is crossed to a homozygous white rabbit. If brown is the dominant trait, they should produce

a. all white rabbits
b. all brown rabbits
c. brown and white spotted rabbits
d. a litter of brown and white rabbits in a 1:1 ratio