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Polygenic traits are traits that are controlled by multiple genes instead of just one. The genes that control them may be located near each other or even on separate chromosomes. Because multiple genes are involved, polygenic traits do not follow Mendel’s pattern of inheritance.
Polygenic inheritance, also known as quantitative inheritance, refers to a single inherited phenotypic trait that is controlled by two or more different genes.
In humans, height, skin color, hair color, and eye color are examples of polygenic traits. Type-2 diabetes, coronary heart disease, cancer, and arthritis are also deemed polygenic. However, these conditions are not just genetic since polygenes can be influenced by environmental factors.
A polygenic trait is a characteristic, such as height or skin color, that is influenced by two or more genes. Because multiple genes are involved, polygenic traits do not follow the patterns of Mendelian inheritance.
Unlike traits governed by single genes, polygenic traits result from the interaction of multiple genes, leading to a continuous range of phenotypic expressions. This section examines polygenic inheritance with examples from wheat kernel color and tobacco corolla length.
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.
Polygenic traits are traits such as height or eye color that result from the product of multiple genes. We already know that our genes play an important role in determining our physical traits, such as the color of our hair, eyes and skin. They are passed down from one generation to the next, which is why you look like a mashup of your parents.
What are polygenic inheritance examples? Human phenotypes or human physical traits such as hair color, height, skin color, blood pressure, intelligence, autism, and longevity are some of the examples of polygenic inheritance.
What are 3 examples of polygenic traits? Three examples of polygenic traits in humans are height, skin colour and eye colour. These traits are governed by multiple genes.
Human phenotypes such as hair color, eye color, height, and weight are examples of polygenic traits. Complex diseases (e.g., cardiovascular diseases, Alzheimer’s, and Schizophrenia) also have a polygenic basis.