Question

the genotype of pure black Guinea pig is​

Answer 1

Black coloured guinea pig is crossed with white coloured guinea pig .

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Answer 2

Answer:

In a case where the black colored guinea pig (BB) is crossed with a white-colored guinea pig (bb):

The genotype of parents is BB x bb The Gametes of parents are B, B x b, b

The phenotype of F1 generation:

All are Bb (that is black colored guinea pig)

• The Selfing of F1 generation is Bb x Bb
• The gametes F1 generation are b, b x B,b
• The phenotype of F2 generation: BB, Bb, Bb, and bb

The offsprings produced in the F2 generation are:

-BB- black colored guinea pig

-2 Bb- black colored guinea pig bb

- white-colored guinea pig

In such types of cases, the black is dominant and the white is recessive.

The ratio of genotypic is 1:2:1. (1 BB, 2Bb, and 1bb)

The ratio of phenotypic is 3:1 (3 black and 1 white)

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