Table of Contents
What are examples of discontinuous variation?
Examples of discontinuous variation include a person’s blood group or the color of a species of bird. These variations can exist for two major reasons. They could be purely random genetic changes, or they can be traits that have been influenced and selected by the environment.
What is a discontinuous genetic variation?
Discontinuous variation is controlled by alleles of a single gene or a small number of genes. The environment has little effect on this type of variation. Continuous variation is the combined effect of many genes (known as polygenic inheritance) and is often significantly affected by environmental influences.
What are the examples of continuous and discontinuous variation?
Examples of continuous variation include height, weight, heart rate, finger length, leaf length, etc. Examples of discontinuous variation include tongue rolling, finger prints, eye colour, and blood groups. Continuous variation fluctuates around an average or a mean of species.
Is genotype A discontinuous variation?
Discontinuous variation is the second type of genetic variation, showing two or more distinct phenotypes for a particular character in a population. Therefore, there is a predictable relationship between the genotype and phenotype of discontinuous variation.
Is tongue rolling an example of discontinuous variation?
The ability to roll the tongue, and blood groups, are examples of discontinuous variation.
Is eye Colour discontinuous variation?
A characteristic of any species with only a limited number of possible values shows discontinuous variation. For example: eye colour.
What is discontinuous trait?
Definitions. Discontinuous traits – traits with only a few possible phenotypes that fall into discrete classes; phenotype is controlled by one or only a few genes (ex.: tall or short pea plants; red, pink or white snapdragon flowers)
Is tongue rolling a discontinuous variation?
The ability to roll the tongue, and blood groups, are examples of discontinuous variation. These characteristics can be explained much more easily by simple rules of genetics and are less likely to be affected by other factors.
Is earlobe shape continuous or discontinuous?
Here, when you organize your ear cards into a continuous spectrum, you’re describing earlobe shape as a continuous trait, ranging from free to attached. Scientists usually consider continuous traits to be complex traits.
Is arm span discontinuous variation?
Which are examples of discontinuous variation? Discontinuous: Eye colour, handedness & lobed/lobeless ears. Continuous: Hand span, arm length & height. Discontinuous data can be plotted on a bar chart.
Why is tongue discontinuous variation?
Is TT a heterozygous or homozygous?
| Genotype | Definition | Example |
|---|---|---|
| Homozygous | Two of the same allele | TT or tt |
| Heterozygous | One dominant allele and one recessive allele | Tt |
| Homozygous dominant | Two dominant alleles | TT |
| Homozygous recessive | Two recessive alleles | tt |