Frequent question: Which of the following is controlled by multiple alleles in humans?

Which of the following is controlled by multiple alleles?

The main particular gene adjusts in three or four allele forms known as multiple alleles. -Example of multiple genes is the genes of ABO blood group system. -The ABO system in humans is controlled by three alleles usually referred to as Ia, Ib and Ic.

Which of the following traits 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. The allele for blood type A and the allele for blood type B are codominant.

Which of the following traits is controlled by one gene with multiple alleles in humans?

A trait controlled by one gene but multiple alleles is blood type. There are 4 phenotypes: A, B, AB, O. Types A and B are codominant, and O is recessive to A and B. None are dominant.

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Which inheritance is controlled by multiple alleles?

The mode of inheritance in case of multiple alleles is called multiple allelism. A well known and simplest example of multiple allelism is the inheritance of ABO blood groups in human beings. In human population, 3 different alleles for this character are found – IA IB and Io.

Which of the following is 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.

What is a human trait controlled by multiple genes?

Polygenic Trait

A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.

What traits are likely to be 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 are some human traits controlled by?

Some human traits are controlled by single genes with two alleles, and others by single genes with multiple alleles. Still other traits are controlled by many genes that act together. Height and skin color are both examples of human traits controlled by many genes.

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.

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Which of the following trait is regulated by one gene?

Widow’s peak and hitchhiker’s thumb are dominant traits controlled by a single autosomal gene.

Is a trait controlled by only one gene?

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. The traits listed on the next pages have commonly been presented as being determined by single genes.