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hoa [83]
4 years ago
10

In guinea pigs, the allele for black fur(B) is dominant over the allele for

Biology
1 answer:
motikmotik4 years ago
5 0

The expected phenotype ratio is 9:3:3:1 for a BbFf x BbFf  cross.

Explanation:

Data given:

Black fur dominant = BB, short fur dominant FF

brown fur recessive = bb, long fur ff

genotype of parents:

BbFf   and BbFf

The cross between these two genotype of parents is shown in the below punnet square:

             BF          Bf              bF         bf

BF   BBFF       BBFf          BbFF      BbFf

Bf    BBFf        BBff            BbFf       Bbff

bF   BbFF       BbFf           bbFF       bbFf

bf     BbFf        Bbff           bbFf        bbff

phenotype ratio:

black fur and short guinea pig = 9

black and long fur = 3

brown and long fur = 3

brown and short fur-1

 The expected phenotypic ratio is 9:3:3:1

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