Heredity Vocab Usage Questions
1. The genotype of a particular trait is usually described as being homozygous dominant,
heterozygous dominant or recessive. Based on your genome (meaning the genotypes found on
your chromosomes) as a pea plant, identify the genotype(s) that are
a. homozygous dominant:
b. heterozygous dominant:
c. recessive:
2. Based on the genome of your pea plant “mate”, identify the genotype(s) that are
a. homozygous dominant:
b. heterozygous dominant:
c. recessive:
3. Why is it redundant (repetitive) to call a genotype homozygous recessive?
4. Examine the genome of offspring #1 and identify which pea plant “parent” it most closely
resembles. Explain your answer in terms of genotypes.
5. Now examine the genome of offspring #2 and identify which pea plant “parent” it most
closely resembles. Explain your answer in terms of genotypes.
6. Activity
a. You and your “mate” recreate the chromosome pairings of your two offspring.
b. One “parent” takes the chromosomes of offspring #1 and the other “parent” takes the
chromosomes of offspring #2.
c. Next, each parent will randomly select one chromosome from each pair.
d. Find a pea plant “parent” from a different group and pair up your offspring’s chromosome
with their offspring’s chromosome.
7. Based on the genome of this new offspring, identify which pea plant “parent” it most closely
resembles, you or your original “mate.” Explain your answer in terms of genotypes.