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Everyone only has two alleles for blood type. The parents each pass one down to the child.

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What four human groups are controlled by three alleles instead of two?

A-B-O blood group system in humans is controlled by three alleles (A, B, and O). This system determines a person's blood type based on the presence or absence of specific antigens on red blood cells.


The blood type trait which is controlled by more than two alleles for a given gene and therefore is called?

The blood type trait that is controlled by more than two alleles for a given gene is known as the ABO blood group system. It involves three alleles: A, B, and O, which determine blood types A, B, AB, and O. This system results in four possible blood types due to the combination of these multiple alleles.


What is a trait controlled by three or more alleles have?

multiple alleles


Why are there more genotypes and phenotypes for blood types?

There are more genotypes and phenotypes for blood types due to the presence of multiple alleles and the codominance of certain alleles in the ABO blood group system. The ABO blood types are determined by three alleles: A, B, and O. The combinations of these alleles lead to four main phenotypes (A, B, AB, and O), while the presence of the Rh factor (positive or negative) further increases the variety of possible blood types. This genetic diversity arises from evolutionary processes and the inheritance patterns of multiple alleles.


What are traits inherited by multiple alleles?

Traits inherited by multiple alleles are those that are controlled by three or more different forms of a gene (alleles) at a single locus. Examples include human blood type, where the ABO gene has three common alleles (IA, IB, and i), and coat color in rabbits, which is determined by four alleles of the C gene (C, cch, ch, and c).

Related Questions

ABO blood group expression is an example of?

ABO blood group expression is an example of a genetic trait that is determined by multiple alleles. The ABO blood group system is controlled by three alleles (IA, IB, i), which determine the presence or absence of antigens on red blood cells. The combination of these alleles in an individual's genotype determines their blood type.


What four human groups are controlled by three alleles instead of two?

A-B-O blood group system in humans is controlled by three alleles (A, B, and O). This system determines a person's blood type based on the presence or absence of specific antigens on red blood cells.


What is an example of multiple alleles?

An example of multiple alleles is the ABO blood system in humans, where the gene for blood type has three alleles: A, B, and O. Each person inherits two of these alleles, resulting in four possible blood types: A, B, AB, and O.


The blood type trait which is controlled by more than two alleles for a given gene and therefore is called?

The blood type trait that is controlled by more than two alleles for a given gene is known as the ABO blood group system. It involves three alleles: A, B, and O, which determine blood types A, B, AB, and O. This system results in four possible blood types due to the combination of these multiple alleles.


Blood type in humans is controlled by how many alleles?

Blood type in humans is controlled by three alleles at the ABO gene locus on chromosome 9. These three alleles are responsible for determining the blood types A, B, AB, and O. Each person inherits one allele from each parent, resulting in various blood type combinations.


What is a trait controlled by three or more alleles have?

multiple alleles


How many alleles go into polygenic inheritance?

three or more, or multiple


How many alleles are there for blood type-?

There are three alleles for blood type: IA=Blood type A IB=Blood type B i=Blood type O The alleles for blood type A and B are codominant so when someone contains the IA and IB alleles, their blood type is AB.


How blood type is inherit?

Blood type is controlled by multiple alleles. Blood type is inherited by three alleles, one A, one B, and an O, which is recessive Ex. A= IAIA IAi B= IBIB or IBi AB= IAIB O=ii


When more than two different alleles control a trait?

This phenomenon is known as multiple allelism, where there are more than two different variations of a gene (alleles) that can affect a single trait. In this case, individuals can inherit one of several possible alleles for the trait. Examples include the ABO blood group system in humans, where there are three alleles (IA, IB, i) that determine a person's blood type.


What are three different alleles used to represent blood type?

The three alleles are A, B, and O


Why are there more genotypes and phenotypes for blood types?

There are more genotypes and phenotypes for blood types due to the presence of multiple alleles and the codominance of certain alleles in the ABO blood group system. The ABO blood types are determined by three alleles: A, B, and O. The combinations of these alleles lead to four main phenotypes (A, B, AB, and O), while the presence of the Rh factor (positive or negative) further increases the variety of possible blood types. This genetic diversity arises from evolutionary processes and the inheritance patterns of multiple alleles.