Which trait is controlled by multiple alleles?

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 traits are controlled by multiple genes?

A trait that is controlled by more than one gene is called polygenic which translates to “multiple genes”. The genes work together to make one trait. Examples are skin, eye and hair color.

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 does it mean to be controlled by multiple alleles?

Multiple alleles is a type of non-Mendelian inheritance pattern that involves more than just the typical two alleles that usually code for a certain characteristic in a species. … Other alleles may be co-dominant together and show their traits equally in the phenotype of the individual.

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What is an example of multiple alleles?

An example of multiple alleles is the ABO blood group system in humans. Human gene I (I for ‘isohaemagglutinin’) exists in three allelic forms: IA, IB, and IO. IA and IB produce type A and type B antigens, respectively, on the cell surface of RBCs whereas IO (or i) is a recessive allele and does not produce antigen.

Why is multiple allele trait described as such?

Traits controlled by more than two alleles have multiple alleles. Although any one person usually has only two alleles for a gene, more than two alleles can exist in the population’s gene pool. Theoretically, any base change will result in a new allele.

Is controlled by three alleles?

The ABO system in humans is controlled by three alleles, usually referred to as IA, IB, and IO (the “I” stands for isohaemagglutinin). IA and IB are codominant and produce type A and type B antigens, respectively, which migrate to the surface of red blood cells, while IO is the recessive allele and produces no antigen.

Is blood type controlled by multiple alleles?

Human blood type is determined by codominant alleles. There are three different alleles, known as IA, IB, and i. The IA and IB alleles are codominant, and the i allele is recessive. The possible human phenotypes for blood group are type A, type B, type AB, and type O.

Is controlled by three alleles ABO?

Human blood is controlled by three alleles that create the ABO blood types. A and B are co-dominant, while the third allele, O, is recessive to the other two alleles. Below are a number of parent combinations. For each, indicate whether it could produce the resulting child.

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What does it mean for a trait to have multiple alleles quizlet?

Terms in this set (5)

Multiple Alleles. – When three or more alleles control a trait. Example. Blood Types in humans.

What do you mean by multiple alleles explain with example?

Multiple alleles refer to the occurrence of three or more than three alleles for a particular gene. Alleles are different or contrasting forms of a gene. For example, for the gene encoding for height, one allele can be for tallness, whereas the other can be for dwarfness.

Where are multiple alleles present?

Multiple alleles are present at the same locus as one type of chromosomes. The pairs of genes occupying a specific spot called locus on a chromosome are known as alleles.