Eye color is not a continuous variation because it is determined by specific genetic factors that result in distinct categories or phenotypes, such as brown, blue, green, and hazel. These colors are influenced by the amount and type of pigments in the iris, which are governed by multiple genes, leading to discrete variations rather than a smooth gradient. While there can be variations within these categories (like shades), the overall distribution of eye colors remains distinct and limited rather than continuous.
polygenic trait
Continuous variation refers to a range of possible values that a trait can take, such as height or weight, showing a smooth spectrum of variation. Discontinuous variation refers to distinct categories or traits that do not show a gradual range of values, like blood type or eye color.
This is a typical kind of continuous variation which is controlled by polygenes.
This is an example of polygenic inheritance, where multiple genes contribute to a single trait, resulting in a continuous range of phenotypes. In the case of eye color, several genes interact to produce varying levels of melanin, leading to the spectrum of colors observed from dark brown to green to blue. This type of inheritance often results in quantitative traits, which exhibit continuous variation rather than distinct categories.
Natural eye colour is discontinuous. :) !
Flower color variation can be either continuous or discontinuous, depending on the species and genetic factors involved. Continuous variation occurs when color changes gradually across a spectrum, often influenced by multiple genes (polygenic inheritance). In contrast, discontinuous variation results in distinct color categories, typically governed by a single gene with different alleles. Overall, the mode of variation in flower color is determined by the underlying genetic mechanisms.
Hair colour is continuous because there is a continual range of values when it comes to hair colour
A genetic characteristic of an individual refers to a trait that is determined by their genes, such as eye color, blood type, or susceptibility to certain diseases. These characteristics are inherited from parents and can vary among individuals.
no, as a flower is either for example blue or white, and cannot be something in between, thus its discontinuous variation.
Continuous Variation and Discontinuous Variation.
Eye color is not an example of polygenetic traits. Skin color is. Eye color is rather simple as far as genetics go (in humans). Brown (B) is dominate and blue (b) is recessive. A person with blue eyes has to have to have both genes for the color blue (bb). A person with brown eye color can has both genes for brown (BB) or one for brown and one for blue (Bb). The blue is not expressed in this case with Bb. Some people have hazel eyes but this is a variation of the blue color.
It is an example of continuous variations.