Table of Contents
Is eye color an example of phenotype?
Generally speaking, a phenotype is an inherited characteristic that we perceive. Eye color, hair color, and blood type are all phenotypes.
Is eye color a trait or phenotype?
In the most elementary form, the inheritance of eye color is classified as a Mendelian trait. On the basis of the observation of more than two phenotypes, eye color has a more complex pattern of inheritance. Eye color ranges include varying shades of brown, hazel, green, blue, gray, and in rare cases, violet and red.
What are 3 possible phenotypes?
If the only alleles for hair texture were straight and curly, there would be three phenotypes: straight, curly, and wavy. However, you asked for something a little different. You wanted three phenotypes that are all equally represented in the population.
Are blue eyes homozygous or heterozygous?
Being homozygous for a particular gene means you inherited two identical versions. It’s the opposite of a heterozygous genotype, where the alleles are different. People who have recessive traits, like blue eyes or red hair, are always homozygous for that gene.
Why are blue eyes blue?
The colour of our eyes depends on how much melanin is present in the iris. Blue eyes get their colour the same way water and the sky get their blue colour — they scatter light so that more blue light reflects back out. More blue light gets back out and the eyes appear to be blue.
What are phenotype characters?
phenotype, all the observable characteristics of an organism that result from the interaction of its genotype (total genetic inheritance) with the environment. Examples of observable characteristics include behaviour, biochemical properties, colour, shape, and size.
How many phenotypes are there?
There are three common alleles in the ABO system. These alleles segregate and assort into six genotypes, as shown in Table 1. As Table 1 indicates, only four phenotypes result from the six possible ABO genotypes.
What are genotypes and phenotypes?
Wilhelm Johannsen and the genotype conception of heredity The genotype refers to the genetic material passed between generations, and the phenotype is observable characteristics or traits of an organism.
What is the heterozygous phenotype for eye color?
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb.