Question

How many genetic loci are estimated to contribute to skin colour variation in humans?

विकल्प

• Three gene pairs (6 alleles total)

• Approximately 400 genes

• Approximately 60 genetic loci

• Approximately 16 genes

Answer 1

While the simplified educational model uses three gene pairs, approximately 60 genetic loci actually contribute to human skin colour variation. This highlights that real polygenic traits involve far more genes than simplified classroom examples. The greater the number of genes involved, the more continuous and gradual the phenotypic variation becomes.