There are many traits in plants and animals that are governed by polygenes. For example 1. kernel color in wheat (studied by H. Nelsson- Ehle), Skin color in humans (studied by C. B. Devenport) and Corolla length in Nicotiana longiflora (studied by E. M. East).
When three or more contrasting genes control a trait, it is called polygenic inheritance. This type of inheritance involves multiple genes interacting to influence a single trait, resulting in a continuous distribution of phenotypes in a population.
Natural selection can lead to individuals with certain combinations of polygenic traits having higher fitness, increasing their likelihood of passing on their genes to the next generation. It can drive the frequency of alleles that contribute to favorable trait combinations up or down in a population over time. Natural selection can influence the distribution of phenotypic variations for polygenic traits, favoring those that provide a survival or reproductive advantage in a specific environment.
Alleles refer to different versions of the same gene. So a single gene can have multiple alleles. For example in fruit flies there is a single gene that controls eye color, and the eye color of the fly depends on the alleles they have for that gene (since they have two copies of every gene, being diploid). A polygenic trait refers to any inheritable trait that is controlled by multiple genes, and each of these genes can have multiple alleles. For example, eye color in humans is a polygenic trait. There are at least three different genes, each with multiple alleles, that determine eye color in humans. Polygenic traits don't follow patterns of mendelian inheritance. So in summation the difference is multiple alleles refers to different versions of one gene and polygenic traits refers to a single trait which is controlled by multiple genes (each with multiple alleles) Yes, or: Multiple alleles are "the existence of more than two alleles (versions of the gene) for a genetic traits. Polygenic traits are "[characteristics of organisms that are] influenced by several genes." So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by multiple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
There are technically more than three traits and those traits are distinctive, widespread, abundant and limited in geologic time.
Mendel made three key decisions in designing his experiments. First, he selected purebred pea plants that were true breeding for specific traits. Second, he focused on only one trait at a time, such as flower color or seed shape. Lastly, he used statistical analysis to determine ratios and patterns in the inheritance of traits.
Height: Polygenic inheritance contributes to variations in height within a population due to the combined effects of multiple genes. Skin color: Skin color is determined by several genes working together in a polygenic manner. Eye color: Eye color is also influenced by polygenic inheritance, with variations arising from the interaction of multiple genes.
Polygenic inheritance is a reason for some of the variety in human appearance. Eye color, hair color and skin color are all polygenic traits. That is why there are dozens of possible eye colors instead or just two or three. The mixing of alleles from multiple genes increases the number of possible phenotypes.
three or more, or multiple
No, they are controlled by only two or more traits
When three or more contrasting genes control a trait, it is called polygenic inheritance. This type of inheritance involves multiple genes interacting to influence a single trait, resulting in a continuous distribution of phenotypes in a population.
Multiple alleles is when there are more than 2 alleles in a single trait. In blood type, instead of either one dominant and one recessive type alleles, there is one recessive allele (type O) but two dominant alleles(type A and B). Polygenic inheritance is when more than one gene controls a single trait, such as height in which three genes are responsible.
Multiple alleles are genes that have more than two alleles. An example of this would be blood types, with ABO as three separate alleles.Polygenic traits are traits whose phenotype rely on alleles from different genes. An example of this would be hair type, which relies on genes from different parts of chromosomes.The main difference is that multiple alleles are genes with 3 or more alleles; polygenic traits do not necessarily have more alleles, but they rely on on multiple genes.
Natural selection can lead to individuals with certain combinations of polygenic traits having higher fitness, increasing their likelihood of passing on their genes to the next generation. It can drive the frequency of alleles that contribute to favorable trait combinations up or down in a population over time. Natural selection can influence the distribution of phenotypic variations for polygenic traits, favoring those that provide a survival or reproductive advantage in a specific environment.
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!
Darwin's Theory of Evolution consists of three main parts: variation, inheritance, and selection. Variation refers to differences in traits among individuals, inheritance involves passing on these traits to offspring, and selection entails the process by which certain traits become more common in a population due to their advantage in survival and reproduction.
Alleles refer to different versions of the same gene. So a single gene can have multiple alleles. For example in fruit flies there is a single gene that controls eye color, and the eye color of the fly depends on the alleles they have for that gene (since they have two copies of every gene, being diploid). A polygenic trait refers to any inheritable trait that is controlled by multiple genes, and each of these genes can have multiple alleles. For example, eye color in humans is a polygenic trait. There are at least three different genes, each with multiple alleles, that determine eye color in humans. Polygenic traits don't follow patterns of mendelian inheritance. So in summation the difference is multiple alleles refers to different versions of one gene and polygenic traits refers to a single trait which is controlled by multiple genes (each with multiple alleles) Yes, or: Multiple alleles are "the existence of more than two alleles (versions of the gene) for a genetic traits. Polygenic traits are "[characteristics of organisms that are] influenced by several genes." So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by multiple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
There is no known "inventor" of the laws of biological inheritance, like other laws of nature, they were discovered. Mendel is the person you are most likely looking for. For more information, look up Mendelian Laws of Inheritance.