What is an example of a continuous trait?

Continuous traits: Distribution of phenotypes in the population. varies along a continuum. Individuals differ by small degrees. (examples include height, blood pressure, reaction time, learning ability) Polygenic quantitative or multifactorial.

What is a continuous trait?

A continuous trait displays a range of expression (such as weight, height, etc.) rather than an all-or-none appearance (such as white or red). Continuous traits are usually under polygenic control and subject to substantial environmental influence in expression. polygenes, QTL, continuous variation.

What is one example of a continuous trait that can be studied?

Hair texture is a continuous trait, meaning that hair can be straight or curly or anywhere in between. Curly hair is influenced by genes much more than by the environment. While curly hair runs in families—people with curly hair tend to have children with curly hair—its inheritance patterns are often unpredictable.

What are continuous traits in humans?

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.

Which of the following traits is an example of a continuous trait?

A continuous trait is one that does not fall into discrete categories. Examples include height in humans and fruit weight in tomatoes.

Continuous and Discontinuous Variation | A-level Biology | OCR, AQA, Edexcel

Is skin color a continuous trait?

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 are continuous and discontinuous traits?

If a characteristic can change gradually, it is continuous. If it can only jump from one category to the next, it's discontinuous.

Is weight a continuous trait?

Continuous traits are measured on a continuous numerical scale and include height, weight and milk production. Non-continuous traits cannot be measured on a continuous numerical scale. Examples include meristic traits and threshold traits.

Is number of fingers a continuous trait?

Of course not. You have five fingers because there is a genetic program which specifies five fingers during your development as a fetus. There is no variation on this trait in humans aside from a few outliers, to be human is to have five fingers.

Is blood group A continuous trait?

Human blood groups are an example of discontinuous variation. In the ABO blood group system, only four blood groups are possible - A, B, AB or O. You cannot have a blood group in between these four groups, so this is discontinuous variation.

Is IQ continuous or discontinuous?

Those characteristics that are determined by the joint action of many genes, and intelligence and stature are two examples, are called quantitative characters because they are measured on a continuous scale.

Is number of fingers continuous or discontinuous?

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.

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)

What causes continuous traits?

The continuous variation for complex traits is due to genetic complexity and environmental sensitivity. Genetic complexity arises from segregating alleles at multiple loci. The effect of each of these alleles on the trait phenotype is often relatively small, and their expression is sensitive to the environment.

Which trait is a quantitative or continuous trait in humans?

Many human phenotypes such as IQ, learning ability and blood pressure also are quantitative traits. These traits are controlled by multiple genes, each segregating according to Mendel's laws. These traits can also be affected by the environment to varying degrees.

Is eye color a discrete trait?

Genetic determination of eye color

It was originally thought that eye color was a simple Mendelian trait, meaning it was determined by a single gene, with brown being dominant and blue recessive. It is now clear that eye color is a polygenic trait, meaning it is determined by multiple genes.

Is 6 toes a dominant trait?

Dominant But Rare

So if there are many dominant versions of genes that make six fingers, why is having six fingers rare? Well, those versions of genes are rare. You don't meet many people with extra fingers or toes. This means when two people meet and have a baby, odds are neither has the “six-finger” copy of a gene.

Are dimples inherited or acquired?

Dimples—indentations on the cheeks—tend to occur in families, and this trait is assumed to be inherited. Dimples are usually considered a dominant genetic trait, which means that one copy of the altered gene in each cell is sufficient to cause dimples.

Should humans have 6 fingers?

It's really not uncommon for human babies to be born with extra fingers or toes. The mutation is called polydactyly, and around one in 500 babies has it. These extra digits are considered useless, and usually amputated not long after birth - but as new research has shown, they may not be quite so bad after all.

Is eye color discrete or continuous?

Discrete data is organised in separate categories and is often presented in a bar chart. Examples of types of discrete data include: eye colour, hair colour, number of people in a shop, favourite chocolate bar. These values are distinct.

Is hair color discrete or continuous?

Hair colour is a type of discrete data because the values are distinct. You either have one hair colour or another! Continuous data covers a range, so each category is not separate but runs into the next.

Is blood type discrete or continuous?

Blood type is not a discrete random variable because it is categorical. Continuous random variables have numeric values that can be any number in an interval.

Is hair type continuous or discontinuous?

Continuous variation is the opposite, and these are genetic traits that change, like height, hair colour, shoe size. Examples in humans would be a phenotype with distinct categories where there is no variation over time.

Is tongue rolling continuous or discontinuous?

The ability to roll the tongue, and blood groups, are examples of discontinuous variation.

Is shoe size continuous or discontinuous?

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