Monday, August 8, 2011
Dihybrid crosses?
In guinea pigs, rough coat (R) is dominant over smooth coat (r), and black coat (B) is dominant over white (b). A rough, black guinea pig bred to a smooth, white one yielded 28 rough black young; 31 rough white young; 31 smooth black young; 29 smooth white young. What were the genotypes of the parents?
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