In a test cross, peas of an unknown genotype are crossed withpeas of a known genotype. In this example, smooth peas are theunknown and wrinkled peas are the known (rr). If half of theoffspring from that cross are smooth and half are wrinkled, what isthe genotype of the unknown plant?
A. Incomplete dominance
B. Homozygous dominant: RR
C. Homozygous recessive: rr
D. Heterozygous: Rr
E. The genotype cannot be determined from the informationgiven.
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