In animals, traits like milk production in cows, egg-laying in chickens, and behaviors in dogs are polygenic, indicating that multiple genes regulate these physical characteristics. What are some examples of polygenic traits? Many human traits are considered polygenic. Height, hair color, eye color...
Incomplete dominancein genetics is an inheritance pattern where two alleles blend to create a new phenotype. All our traits are coded by our genes, and humans have two copies of each gene, one from the maternal parent and one from the paternal parent. These copies are called alleles.Alleles...
Stabilizing selection works mostly on traits that are polygenic. This means that more than one gene controls the phenotype and so there is a wide range of possible outcomes. Over time, some of the genes that control the characteristic can be turned off or masked by other genes, depending on ...
Certainpolygeniccharacteristics, like skin, eye, and hair color, necessitate the existence of an epistatic gene. However, in human populations, not all polygenic traits are the outcome of epistasis. For instance, the existence of an epistatic gene is not necessary for the development of blonde, ...
Genes that control the behaviors and functionality of multiple genes that have unrelated features are calledpleiotropic genes. Sometimes it has been observed that those traits are very similar in nature while on many occasions they tend to be very non-identical with others. The problems that arise...
–A phylogenetic tree is a diagram showing the evolutionary relationships among biological species based on similarities and differences in genetic or physical traits or both. Physical: involving the body as distinguished from the mind or spirit; animal; sensual. –The lack of physical distance betwee...
The selection of these preferred traits can be very strong. After a particularly strong selection for a trait that is the most desirable, a selective sweep will happen. Not only will the genes that code for the favorable adaptation increase in frequency and be seen more often in the population...