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Biology, Practice Genetics Prob
Part 1: Single Trait Crosses. Complete a Punnett Square for each question & clearly indicate genotypes
(incl. percentages) & phenotypes. (9 Points)
1. Rred apples, r = green apples. If you cross an apple tree that is homozygous recessive with a
tree that is heterozygous, what are the possible genotypes and
phenotypes of the offspring?
a. Punnett Square
b. Offspring genotypes
c. Offspring phenotypes