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.
Which trait is controlled by multiple alleles?
Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type. Your blood type refers to which of certain proteins called antigens are found on your red blood cells.
Multiple Allele Traits.
|Genotype||Phenotype (blood type)|
What is the multiple allele trait?
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 an example of a human trait controlled by multiple genes?
Human features like height, eye color, and hair color come in lots of slightly different forms because they are controlled by many genes, each of which contributes some amount to the overall phenotype.
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.
Which of the following trait is controlled by multiple alleles in humans quizlet?
A trait controlled by one gene but multiple alleles is blood type.
What are examples of 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).
How many alleles are in a trait?
Most traits are determined by more than two alleles. Multiple forms of the allele may exist, though only two will attach to the designated gene site during meiosis. Also, some traits are controlled by two or more gene sites. Both possibilities multiply the number of alleles involved.
What are two examples of human traits?
Mendelian Traits In Humans
|Cleft chin (dominant)||Chin without a cleft (recessive)|
|Face freckles (dominant)||No face freckles (recessive)|
|Wikimedia – Loyna||Wikimedia – David Tribble|
|No Hitchhiker’s thumb (dominant)||Hitchhiker’s thumb (recessive)|
|Wikimedia – manic rage||Wikimedia – drozd|
Is height a dominant or recessive trait?
Although height is an inherited trait, it is impossible to pin it down to just one gene. In fact, over 700 different genes have been found to contribute some small amount to your adult height. However, all of these genes together only account for about 20% of how tall you are.