Concept explainers
Suppose a species of tulip has three alleles for the gene that codes for flower color. The CR allele produces red tulips, the CB allele produces blue tulips, and the CW allele produces white tulips. Both CR and CB are dominant over CW, but CR and CB are incompletely dominant with each other, so CRCB heterozygotes have purple flowers.
What is the expected
CRCB × CBCW _____ red : ______blue : ______purple : ______white
CRCB × CRCW - _______red : _____blue : _____purple : _____white
CRCW × CBCW - _____red : _____blue : _____purple : _____white
CRCB × CRCB - red : blue : purple : white
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