What is an example of a gene in the human body with multiple alleles?

Two human examples of multiple-allele genes are the gene of the ABO blood group system, and the human-leukocyte-associated antigen (HLA) genes. The ABO system in humans is controlled by three alleles, usually referred to as IA, IB, and IO (the “I” stands for isohaemagglutinin).

What is an example of a gene with 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 are multiple alleles explain with an 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.

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Can a gene have multiple alleles?

When the copies of a gene differ from each other, they are known as alleles. A given gene may have multiple different alleles, though only two alleles are present at the gene’s locus in any individual.

Which of the following is a good example of multiple allele?

ABO blood group system provides a good example of multiple alleles.

Why is human blood type an example of multiple alleles?

An example of multiple alleles is the ABO blood-type system in humans. … In this case, the IA and IB alleles are codominant with each other and are both dominant over the i allele. Although there are three alleles present in a population, each individual only gets two of the alleles from their parents.

Is eye color an example of multiple alleles?

Yes, eye colour is an example of multiple alleles. They are more than two alleles encoding for the same.

Are multiple alleles common in humans?

Although individual humans (and all diploid organisms) can only have two alleles for a given gene, multiple alleles may exist in a population level, and different individuals in the population may have different pairs of these alleles.

What does multiple alleles mean in biology?

Definition of multiple allele

: an allele of a genetic locus having more than two allelic forms within a population.

How do multiple alleles of a gene arise?

Multiple alleles exist in a population when there are many variations of a gene present. In organisms with two copies of every gene, also known as diploid organisms, each organism has the ability to express two alleles at the same time. They can be the same allele, which is called a homozygous genotype.

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What is an example of multiple alleles traits What are the alleles that control that trait?

The majority of human genes are thought to have more than two normal versions or alleles. Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type.

Multiple Allele Traits.

Genotype Phenotype (blood type)
ii O
IAIB AB

In what way is the human ABO blood group an example of multiple alleles inheritance?

These are all examples of simple or complete dominance. Type AB blood is an example of co-dominance. The A allele and the B allele are equal in their dominance and will be expressed equally if they are paired together into the genotype IA IB.

How many alleles does the human genome have?

Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

Which of the following example of an allele?

Alleles are different forms of the same gene. … An example of alleles for flower color in pea plants are the dominant purple allele, and the recessive white allele; for height they are the dominant tall allele and recessive short allele; for pea color, they are the dominant yellow allele and recessive green allele.

What is plasma gene?

Plasmagene meaning

A self-replicating hereditary structure once thought to exist in cytoplasm and function in a manner analogous to, but independent of, chromosomal genes.

What is pleiotropic genes give examples?

Fruit flies and vestigial gene, chickens and their frizzle traits, the process of pigmentation and deafness in cats, the pleiotropy sickle cell diseases in humans, and phenylketonuria (also written as PKU), are some of the common examples of pleiotropic conditions.

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