The Phenotypic and Genotypic Characteristics of Polled and Spotted Cattle
The polled trait (no horns) is a dominant gene, while the spotted coat colour is a recessive gene. When a bull is purebred for polled and for solid coat colour, and the cow is heterozygous for both polled and solid coat colour, the possible phenotypes of the offspring will include both polled and horned, and both solid and spotted coat colours. The genotypes of the offspring will depend on the genotypes of the parents. The bull’s genotype is Pp (where P is dominant for polled, and p is recessive for horned) and SS (where S is dominant for solid coat colour, and s is recessive for spotted). The cow’s genotype is PpSs, where P is dominant for polled, p is recessive for horned, S is dominant for solid coat colour, and s is recessive for spotted. Based on these genotypes, the offspring of the bull and cow will have either a PP, Pp, Ps, or pS genotype. This corresponds to phenotypes of polled, horned, solid, and spotted coat colours, respectively. According to a study published in 2019, “a polled calf was born from a heterozygous polled cow and a heterozygous horned bull” (Morshed et al., 2019). This suggests that the offspring could have any of the four genotypes and phenotypes mentioned previously. Cont…..
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more