What is multiple allele trait?
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. The IA and IB alleles are dominant to the i allele.
What is an example of a multiple allele?
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.
What is the difference between multiple allele traits and polygenic traits?
In case of multiple alleles, the same DNA strand is involved, whereas polygenic inheritance is found on multiple DNA strands. Multiple alleles involve multiple alternate forms of a gene, while polygenic traits are regulated by a group of non-allelic genes. Hence, in blood type, there is one gene but three alleles.
What are multiple alleles Class 12?
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 is the difference between a multiple allele trait and a typical Mendelian inheritance?
In Mendelian inheritance, only two factors are involved in the determination of a particular trait. Multiple alleles are more than two alternative forms of a single gene, which are located at the same loci of homologous chromosomes. Polygenic traits are determined by several genes.
How does multiple allele differ from Pseudoallele?
Isoalleles refer to the type of alleles at the same loci whose phenotype is indistinguishable , but only can be distinguished with special analysis. Psuedoalleles are functionally alleles but structurally are not. Multiple alleles are more than two alternative forms (alleles) of a gene located at the same loci.
What are multiple alleles Ncert?
Answer: More than two alternative alleles of a gene are known as multiple alleles in a population occupying the same locus on a chromosome or its homologue.
How do multiple alleles and polygenic traits differ give an example of each?
In multiple alleles the same strand of DNA is involved. For example the blood type is found on the same strand of DNA. The polygenic inheritance is found on multiple strands of DNA. For example the formation of antibiotics to fight bacteria and other foreign bodies are found on multiple places on the DNA.
What is the difference between a multiple allele trait and a polygenic trait?
Multiple alleles involve multiple alternate forms of a gene, while polygenic traits are regulated by a group of non-allelic genes. Hence, in blood type, there is one gene but three alleles. The many phenotypes are – A, B, AB, O blood types.
What are multiple alleles in Class 12?
Multiple Allelism. Category : 12th Class. More than two alternative forms (alleles) of a gene in a population occupying the same locus on a chromosome or its homologue are known as multiple alleles. Characteristics of multiple allelism. (a) There are more than two alleles of the same genes.
What is the difference between an allele and a trait?
Main Difference – Allele vs Trait. These different characteristics of a gene that are produced by its alleles are collectively known as a variation. The main difference between allele and trait is that an allele is an alternative form of a particular gene whereas a trait is the character that is determined by the allele.
Which trait is controlled by multiple alleles in humans?
Some human traits are controlled by a single gene that has more than two alleles. Such a gene is said to have multiple alleles-three or more forms of a gene that code for a single trait. An example of a human trait that is controlled by a gene with multiple alleles is blood type.
What is an example of a single allele trait?
Three Examples of a Single Allele Trait. Some traits, like hair color, come from many different genes, but other traits are controlled by a single gene. Those simple traits include Huntington’s disease, galactosemia and phenylketonuria.
What is the difference between multiple alleles and polygenes?
The main difference between multiple alleles and polygenic traits is that multiple alleles are involved in the determination of a single trait by complete dominance or codominance whereas polygenic traits determine a particular trait in a population by codominance or incomplete dominance of each polygene.