Revisiting Genetic Inheritance: Analyzing Coat Color Genotypes

What are the respective genotypes for the bull, cow A, and cow B?

Given data: Bull = Pp Cow A = pp Cow B = pp

Respective Genotypes for the Bull, Cow A, and Cow B:

The respective genotypes for the bull, cow A, and cow B are as follows: Bull = Pp Cow A = pp Cow B = pp

When analyzing genetic inheritance, understanding the genotypes of the individuals involved is crucial. In this scenario, the bull carries the genotype Pp, which means it is heterozygous for the coat color gene. Cow A, on the other hand, has the genotype pp, indicating that it is homozygous recessive for coat color. Similarly, cow B also has the genotype pp, suggesting it is homozygous recessive.

It is important to note that in genetics, uppercase letters are typically used to represent dominant alleles, while lowercase letters represent recessive alleles. Therefore, in this case, P represents the dominant allele for coat color, while p represents the recessive allele for coat color.

Since cow B exhibits the recessive phenotype for coat color, it must have the homozygous recessive genotype pp. Given that the bull has the heterozygous genotype Pp and cow A has the homozygous recessive genotype pp, the cross would be Pp x pp.

By utilizing a Punnett square, we can predict the genotypes of the offspring. The genotypes of the offspring would be 1/2 Pp and 1/2 pp. Therefore, the accurate option among the choices provided is C, where the genotypes are: Bull = Pp, cow A = pp, cow B = pp.

Understanding genetic inheritance and the transmission of traits from parents to offspring is fundamental in the field of genetics. By analyzing genotypes and using tools like Punnett squares, we can make predictions about the possible outcomes of genetic crosses.