Genetics Quiz Extra Credit (due Tue: 1/20)
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If you made less than 80 (79 or below), you may do corrections for some points back
You can get up to half of the total points back that you missed on the quiz (max score = 80)
To receive maximum points back, corrections should be complete and thorough
If you missed any of the Punnett square questions #17-20, (Academic: #21-24) you must
complete the two Punnet squares and questions at the bottom of this page
Staple corrections to your quiz and turn it in on Tuesday 1/20
Instructions: Write a complete sentence for each missed question explaining the correct answer, and
why it is correct. For vocabulary words you must also provide a definition and an example
Ex: 13. Number thirteen is “phenotype” because it is the physical or external appearance of a
trait. For example, brown colored hair is a phenotype for the characteristic of hair color.
1. Mendel discovered that green peapods (G) were dominant over yellow peapods (g) in pea
plants.
a. Show the results of crossing a pure recessive (homozygous) plant with a hybrid
(heterozygous) plant.
What percent of the offspring are
expected to have green peapods?
What percent of the offspring are
expected to have yellow peapods?
b. Show the results of crossing a hybrid (Gg) plant with another hybrid (Gg) plant. (Note: This is
called a hybrid cross, and they are very cool!)
What percent of the offspring are
expected to have green peapods?
What fraction of the offspring are
expected to have green peapods?
What percent of the offspring are
expected to have yellow peapods?
What fraction of the offspring are
expected to have yellow peapods?
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