Does height have continuous variation?

Does height have continuous variation?

Human height is an example of continuous variation. It ranges from that of the shortest person in the world to that of the tallest person. Any height is possible between these values. For any species a characteristic that changes gradually over a range of values shows continuous variation.

Which type of traits show continuous variation?

For any species, a characteristic that changes gradually over a range of values shows continuous variation. Examples of such characteristics are: weight. hand span.

What type of genetic trait is height?

Polygenic inheritance. Human features like height, eye color, and hair color come in lots of slightly different forms because they are controlled by many genes, each of which contributes some amount to the overall phenotype.

What is continuous trait variation?

Continuous variation describes traits whose phenotypes occur on a continuum, rather than having a limited number of possible phenotypes. Traits with continuous variation are often also polygenic traits, but not always, and not all polygenic traits have continuous variation.

Why Is height a polygenic trait?

Usually, traits are polygenic when there is wide variation in the trait. Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. There is also a wide range of skin color across people.

Is height inherited or environmental?

For most individuals, though, height is controlled largely by a combination of genetic variants that each have more modest effects on height, plus a smaller contribution from environmental factors (such as nutrition). More than 700 such gene variants have been discovered and many more are expected to be identified.

What contributes to height?

The main factor that influences a person’s height is their genetic makeup, or DNA. However, many other factors can influence height during development, including nutrition, hormones, and medical conditions. Scientists believe that DNA is responsible for about 80% of a person’s height.

Is foot length continuous or discontinuous variation?

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

Is height a dominant trait?

Although height is an inherited trait, it is impossible to pin it down to just one gene. In fact, over 700 different genes have been found to contribute some small amount to your adult height. However, all of these genes together only account for about 20% of how tall you are.

Is height genetic or environmental?

Is height a polygenic trait?

Because height is determined by multiple gene variants (an inheritance pattern called polygenic inheritance), it is difficult to accurately predict how tall a child will be.

What determines height of a child?

The height of a person is determined by a combination of genetics and environmental factors. The precise contribution from these two factors is complex. Some studies suggest that genetics contributes 60%-80%. Normally, a child’s height is based on parental heights subject to regression toward the mean.

Why is human height an example of continuous variation?

Human height is an example of continuous variation. It ranges from that of the shortest person in the world to that of the tallest person. Any height is possible between these values. So it is continuous variation.

Which of the following is an example of continuous variation?

Human height is an example of continuous variation. It ranges from that of the shortest person in the world to that of the tallest person. Any height is possible between these values. So it is continuous variation. For any species a characteristic that changes gradually over a range of values shows continuous variation.

What causes variation in a species?

This can be caused by inherited or environmental factors. Variation can be continuous or discontinuous. Some of the features of the different organisms in a species show continuous variation, and some features show discontinuous variation. Human height is an example of continuous variation.

Which type of variation is also known as a quantitative trait?

Therefore, this type of trait is also known as a quantitative trait. Discontinuous variation is the second type of genetic variation, showing two or more distinct phenotypes for a particular character in a population. Generally, it is the most simple type of genetic variation to analyze.