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Title: Flow color in snapdragons is determined to some extent by a pair of alleles that show Post by: BioMajor17 on Oct 15, 2012 Flow color in snapdragons is determined to some extent by a pair of alleles that show
incomplete dominance: red, pink, and white with pink being the heterozygous class. Flower shape, mushroom versus normal, is determined by an independently assorting, single gene pair where normal is completely dominant to mushroom. Two pink snapdragons with normal flowers were crossed and produced, among 1600 total, 100 white, mushroom-flowered offspring. What other types of offspring and how many of each are expected from this cross? Title: Flow color in snapdragons is determined to some extent by a pair of alleles that show Post by: colleen on Oct 16, 2012 Both parents must have been RWNn
RW because they were pink and Nn because that is the only way that normal flowers could produce mushroom offspring. Each parent can make 4 different gametes RN Rn WN Wn The punnett square gives : 300 Red Normal 600 Pink Normal 300 White Normal 100 Red mushroom 200 Pink mushroom and 100 white mushroom. |