What do multiple alleles allow for?

What are traits controlled by multiple alleles?

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

What is multiple alleles explain with the help of 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.

What are multiple alleles definition?

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

Why is it advantageous to have 2 alleles per trait?

Since genes come in more than one version, an organism can have two of the same alleles of a gene, or two different alleles. This is important because alleles can be dominant, recessive, or codominant to each other. … This means that if a pea plant has two red alleles, its flowers will be red.

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.

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What are multifactorial traits?

What is multifactorial inheritance? Multifactorial inheritance is when more than one factor causes a trait or health problem, such as a birth defect or chronic illness. The main factor is genes. But the cause includes other factors that aren’t genes, such as: Nutrition.

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.