What is controlled by multiple alleles?

What is controlled by multiple alleles in humans?

The best characterized example of multiple alleles in humans is the ABO blood groups, discussed in the Non-Mendelian Inheritance concept. Other human traits determined by multiple alleles would be hair color, hair texture, eye color, built, physical structures, etc.

What are some traits controlled by multiple genes?

Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin color, eye color and weight. Polygenes exist in other organisms, as well.

What human traits are controlled by a single gene with multiple alleles?

Such a gene is said to have multiple alleles-three or more forms of a gene that code for a single trait. An example of a human trait that is controlled by a gene with multiple alleles is blood type. There are four main blood typesA, B, AB, and O-controlled by three alleles.

Which of the following trait is controlled by multiple alleles in humans quizlet?

Human blood type is controlled by a gene with multiple alleles. There are four main blood types: A,B,AB, and O. Three alleles control the inheritance of blood types.

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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 are examples of polygenic traits?

Some examples of polygenic inheritance are: human skin and eye color; height, weight and inteligence in people; and kernel color of wheat.

What are multiple allele traits?

Multi-allele traits have more than two alleles at a population level, although individuals still only get one from each parent. These alleles may exhibit classic dominance, they may mask each other, they may add to or subtract from each other, or some combination of these effects.

What is controlled by a single gene?

Some characteristics are controlled by a single gene , such as fur colour in mice and red-green colour blindness in humans. Genes might have different forms, and these are called alleles . Chromosomes are found in the nucleus of a body cell in pairs.

How many traits are controlled by a single gene?

Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type. There are three common alleles for this trait, which can be represented by the letters A, B, and O.

Multiple Allele Traits.

Genotype Phenotype
AA A
AO A
AB AB
BB B

Are most human traits due to single genes?

While a few traits are due to only one gene (and its alleles), most human genetic traits are the product of interactions between several genes.

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