What are 2 examples of polygenic inheritance?

What are 2 examples of polygenic inheritance?

Some examples of polygenic inheritance are: human skin and eye color; height, weight and inteligence in people; and kernel color of wheat. In fact, kernel color in wheat is nicely shown in Table 2.

What are 2 polygenic traits?

Because multiple genes are involved, polygenic traits do not follow Mendel’s pattern of inheritance. Instead of being measured discretely, they are often represented as a range of continuous variation. Some examples of polygenic traits are height, skin color, eye color, and hair color.

What traits are associated with polygenic inheritance?

Polygenic traits have many possible phenotypes (physical characteristics) that are determined by interactions among several alleles. Examples of polygenic inheritance in humans include traits such as skin color, eye color, hair color, body shape, height, and weight.

What are most traits the result of?

Traits are determined by genes, and also they are determined by the interaction with the environment with genes. And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA.

What is a polygenic trait example?

A polygenic trait is a characteristic, sometimes we call them phenotypes, that are affected by many, many different genes. A classic example of this would be height. Height in humans is very strongly genetically controlled, but there are many, many different genes that control height.

How does the environment affect the inheritance of traits?

Internal and external environmental factors, like gender and temperature, influence gene expression. Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.

What are multifactorial traits?

What is multifactorial inheritance? Multifactorial inheritance is when more than one factor causes a trait or health problem, such as a birth defect or chronic illness. The main factor is genes. But the cause includes other factors that aren’t genes, such as: Nutrition.

What traits are inherited?

Inherited traits include things such as hair color, eye color, muscle structure, bone structure, and even features like the shape of a nose. Inheritable traits are traits that get passed down from generation to the next generation. This might include things like passing red hair down in a family.

What is inherited traits give its examples?

An inherited trait is a trait that is received by an organism from its parents. These traits are controlled by the genes of individuals and hence, transferred from one generation to another. Examples of inherited traits include hair color, eye color, height, skin color, and susceptibility to certain diseases, etc.

How do you identify a polygenic trait?

Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. 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.

What are some examples of polygenic traits in humans?

There are many traits in humans, which show polygenic inheritance, e.g. skin and hair colour, height, eye colour, the risk for diseases and resistance, intelligence, blood pressure, bipolar disorder, autism, longevity, etc. Brief description of some of the traits: Skin pigmentation: inheritance of skin pigmentation is polygenic inheritance.

What is the meaning of polygenic inheritance?

Polygenic inheritance refers to the inheritance of a trait governed by more than one genes. Generally, three or more genes govern the inheritance of polygenic traits. Multiple independent genes have an additive or similar effect on a single quantitative trait. Which human trait is an example of polygenic inheritance?

What is the distribution of phenotypes determined by polygenic inheritance?

Fortunately, the distribution of phenotypes determined through polygenic inheritance usually fits into a normal distribution of probabilities, with most offspring displaying an intermediate phenotype of the two parents. Using a simplified example of a polygenetic trait controlled by only three genes, this becomes easier to visualize.

What are traits that are influenced by multiple genes?

Traits such as skin color, eye color and hair color are polygenic traits that are influenced by several genes. Stockbyte/Getty Images Regina Bailey is a board-certified registered nurse, science writer and educator. Her work has been featured in “Kaplan AP Biology” and “The Internet for Cellular and Molecular Biologists.”