Explain why polygenic traits are expressed through quantitative variation

Polygenic attributes are quantitative in light of the fact that their phenotype articulation relies upon a few unique alleles found on various chromosomes. The latent alleles of these three qualities (a, b and c) control light pigmentation since lower measures of melanin are created.

Quantitative characteristics are likewise called consistent attributes, and they remain as opposed to subjective, or intermittent, qualities that are communicated as unmistakable phenotype's looked over a discrete set.