WHY IS fingerprint a discontinuous variation?

Continuous variation is usually polygenic and involves multiple genes. Where you can think of a choice of discrete types, but not of a meaningful compromise or gradation between those types, that’s discontinuous variation. So, length of fingers varies continuously, but number of fingers varies only discontinuously.

What is discontinuous variation humans?

A characteristic of any species with only a limited number of possible values shows discontinuous variation . Human blood group is an example of discontinuous variation. In the ABO blood group system, only four blood groups are possible (A, B, AB or O).

Is gender continuous or discontinuous variation?

Gender is also discontinuous. You’re either male or female. Human blood groups are another great example of discontinuous (discrete) variation. There are only four possible distinct blood groups.

What is the cause of discontinuous 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.

And clearly hair color, skin color and eye color all fall under the definition of a continuous trait, because even though they dont seem to be affected by the environment, they are definitely polygenic traits and show a gradation, so they’re definitely continuous traits.

What is continuous and discontinuous traits?

Definition. Continuous variation refers to the type of genetic variation, which shows an unbroken range of phenotypes of a particular character in the population while discontinuous variation refers to the type of genetic variation, which shows to or more separate forms of a character in the population.

Is foot size continuous or discontinuous?

4) Shoe size is an example of discontinuous variation whereas foot length is continuous variation.

What are some discontinuous traits?

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)

What is the difference between continuous and discontinuous data?

Discrete data is information that can only take certain values. Continuous data is data that can take any value. Height, weight, temperature and length are all examples of continuous data.

What is another name for discontinuous variation?

classification of variation …in human populations); or as discontinuous, or qualitative (composed of well-defined classes, as blood groups vary in humans). A discontinuous variation with several classes, none of which is very small, is known as a polymorphic variation.

Continuous traits are common in humans, who show a wide range of possibilities in characteristics such as height, skin color, learning ability and blood pressure. These traits are frequently seen in agriculture, as well.

What are the two type of traits?

Dominant traits always present in the organism’s physical appearance, while recessive traits are hidden or masked by the dominant traits. Alleles are the different versions of a trait, such as differing coat colors in mice.

Is color blindness a polygenic trait?

6 replies. “Definitely not monogenic, as there are multiple types of colorblindness (monochromatic, red-green, blue-yellow, etc.) that would be hard to explain with a single pair of genes. It is largely “”chromosomal”” as the affected genes occur on the X chromosome ” which is why it’s most often seen in males.

Is height a polygenic trait?

​Polygenic Trait Traits that display a continuous distribution, such as height or skin color, are polygenic.

Is color blindness Codominance?

Most commonly, color blindness is inherited as a recessive trait on the X chromosome. This is known in genetics as X-linked recessive inheritance. As a result, the condition tends to affect males more often than females (8% male, 0.5% female).

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