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AP Biology/Unit 5: Heredity
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Genotype Determination From Test Cross Data

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The data in the table show the results of a test cross between a tall pea plant and a short pea plant, which is a recessive trait.

Phenotype Number of Offspring
Tall 50
Short 50

Based on these results, what is the genotype of the tall parent plant?

A

TTTT

B

Either TTTT or TtTt could yield this ratio

C

The result is inconclusive for genotype determination.

D

TtTt

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