Homozygous having indistinguishable alleles of a gene. Pedigree diagram showing the expression of a specific characteristic and the biological relationships among members of a family, often of several generations. Phenotype the observable organism, the expression of a genetic trait. One of the many characteristics determined by parental genotype is eye coloring. I Eye Color Distribution Eye coloring ranges from very light blues and grays to deep browns and blacks.
Eye color is based on several genetic factor.
It is generally acknowledged that dark eyes are a dominant feature while light eye coloring is recessive. The various shadings of blues, greens, and browns indicate a variety of factors determine an individual s eye color. An example of how the lesson can be utilized and a sample work sheet is listed below. What conclusions can be drawn from the data. Discuss dominant and recessive traits.