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What terms describes natural selection that acts against intermediate forms of a polygenic trait to increase genetic variation while not changing the average value of a trait within?
Disruptive selection
What is the genetic composition determining a trait?
Genotype is the genetic makeup of a trait.
What makes something a sex-linked trait instead of just a regular trait?
A sex linked trait can only be found on the x chromosome such as hemophilia, color blindness, and muscular dystrophy. These are traits that can only be inherited through chromosomes instead of regular traits coming through genes.
Would a disease caused by exposure to chemicals be considered a genetic trait?
A genetic trait is passed on through the genes. Which means that disease from exposure to chemicals is not inherited.
What is a contrasting trait?
pea has many sharply ditinct traits each trait has two clear alternative forms e.gseed shap has round or wrinkled phenotype plant hieght was long or short seed colour was yellow or green Mendel called them pair of contrasting trait
True or false height is not a polygenic trait?
false, height is a polygenic trait
Why is height considered a polygenic trait?
Height in considered a polygenic trait because your height is influenced by multiple genes.
What type two or more genes control a trait?
Polygenic inheritance is when two or more genes interact to control a trait. Each gene contributes to the phenotype in an additive manner, resulting in a continuous range of variations for the trait. Examples include human height and skin color.
In a species of rat height is a polygenic trait. what does it mean for this trait to be polygenic?
Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be of 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. Should help students for the year 2022. (Note: May change for upcoming years) Hope it helped!
What is a polygenic trait-?
A polygenic trait is a characteristic that is influenced by multiple genes, each making a small contribution to the trait. This results in a continuous range of phenotypic variation. Examples of polygenic traits include height, skin color, and intelligence.
What inheritance pattern best explains how genes influence human height?
Human height is influenced by multiple genes, making it a polygenic trait. The pattern of inheritance is more complex than simple Mendelian traits, as height is continuously variable and influenced by environmental factors as well. This fits with the idea of polygenic inheritance.
What controls a polygenic trait?
two or more genes
What is a trait or genetic disorder caused by Polygenic inheritance?
A polygenic trait is a trait which multiple genes affect. An example would be skin color, the combined affects of several genes determine your base pigment shade. Polygenic traits are caused by a combination of genes.
What is a trait said to be when several genes influence it?
A trait influenced by multiple genes is called polygenic. These traits often exhibit a continuous range of variation due to the combined effects of multiple genetic factors. Examples include height, skin color, and intelligence.
What is one difference between single gene trait and a polygenic trait?
Polygenic traits result in more variation because so many more alleles are involved in the process of reproduction.
What is a trait called when it is controlled by more than on gene?
A trait that is controlled by more than one gene is called polygenic. This means that multiple genes contribute to the expression of the trait, leading to a continuous range of phenotypic variation. Examples of polygenic traits include height, skin color, and intelligence.
A trait determined by a combined effect of more than one gene?
Some traits are determined by the combined effect of more than one pair of genes also called polygenic, or continuous, traits. An exampleis human stature. The size of all of the body parts from head to foot determines the height of an individual. The sizes of all of these body parts are, in turn, determined by numerous genes. Human skin, hair, and eye color are also polygenic traits because they are influenced by more than one allele at different loci.
