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In guinea pigs, black fur (B) is dominan...

In guinea pigs, black fur (B) is dominant over white fur (b) and rough four ( R ) is domiant over smooth fur ( r ) . A cross between two Guinea pigs hybrid for both traits (BbRr x BbRr) produces some offsprings that have rough, black fur and some that have somooth, black fur. The genotypes of these offsprings illustrate the genetic concept of

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