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    I'm a bit confused.Is the answer simply that the purple flower is displayed but the white flower isn't? But how can you cross the pea plant with a white flower and get a purple one when the purple flower isn't even present? :/.
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    The question says that pea plants with purple flowers were crossed with pea plants with white flowers. Therefore, if all of the F1 progeny had purple flowers, then the purple flower phenotype must be dominant (Either homozygous or heterozygous, doesn't matter either way as the white flowered pea plants must be homozygous recessive).
 
 
 
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Updated: November 1, 2015
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