Analyze a Punnett Square for Two Traits Challenge LESSON 2

Name
Date
Class
Challenge
LESSON 2
Analyze a Punnett Square for Two Traits
In peas, round shape (R) is dominant over wrinkled shape (r), and yellow color (Y) is
dominant over green (y). Suppose that a pea plant that has genotype RrYy is crossed with
a pea plant that has genotype rrYy. Fill in the Punnett square below to predict the possible
phenotypes and genotypes of the offspring. Then analyze the Punnett square. How
many different phenotypes and genotypes are possible?
RY
Ry
rY
ry
rY
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
ry
rY
ry
Genetics
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