answers: alleles
context: are MC1R, ASIP, OCA2, and TYR. There is evidence that as many as 16 different genes could be responsible for eye color in humans; however, the main two genes associated with eye color variation are "OCA2" and "HERC2", and both are localized in Chromosome 15. Before the discovery of DNA, scientists used blood proteins (the human blood group systems) to study human genetic variation. Research by Ludwik and Hanka Herschfeld during World War I found that the incidence of blood groups A and B differed by region; for example, among Europeans 15 percent were group B and 40 percent group </s> Cat coat genetics Cat coat genetics affect the coloration, pattern, length, and texture is a complex subject, and many genes are involved. Cat coat genetics can produce a variety of colors and patterns. These are physical properties and should not be confused with a breed of cat. Furthermore, cats may show the color and/or pattern particular to a certain breed without actually being of that breed. For example, cats may have point coloration, but not be Siamese. The browning gene "B/b/b" codes for TYRP1, an enzyme involved in the metabolic pathway for eumelanin pigment production. Its dominant form, "B", will </s> one's genomic sequence, because it refers to how an individual "differs" or is specialized within a group of individuals or a species. So, typically, one refers to an individual's genotype with regard to a particular gene of interest and the combination of alleles the individual carries (see homozygous, heterozygous). Genotypes are often denoted with letters, for example "Bb", where "B" stands for one allele and "b" for another. Somatic mutations which are acquired rather than inherited, such as those in cancers, are not part of the individual's genotype. Hence, scientists and physicians sometimes talk about the genotype of a particular
question: the genetic makeup of a trait can be illustrated by its