Question

In guinea pig, rough coat i dominant (R) to mooth coat (r) and black coat (B) i dominant to white coat (b). A rough black guinea pig bred with a rough white one produce 29 rough black offpring, 31 rough white offpring, 11 mooth black and 9 mooth white. Give the genotype of the parent, punette quare

Answer 1

RrBb (rough, black) and Rrbb (rough, white) are the genotypes of the parents guinea pigs.

The parent genotype cannot have RR alleles for their coat because the smooth coat phenotype is present in the offspring. Similar to this, the rough, black parent is unable to have BB alleles in its genotype because doing so will prevent its offspring from having a white coat color. This can be understood with the help of the punnet square given in the answer. Therefore, the probability for each phenotype would be as follows:

• rough black- 3/8
• rough white- 3/8
• smooth black- 1/8
• smooth white- 1/8

A dihybrid cross is made up of two people who share two traits that are controlled by two different genes. The idea of a dihybrid cross was developed as a result of Gregor Mendel's observation of pea plants that were either round or wrinkled, yellow or green.

To know more about a dihybrid cross, refer to the following link:

https://brainly.com/question/12540319

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