Why can multiple alleles result in many different phenotypes for a trait? This can happen because the more allele options for a specific gene the more possible combinations and therefore possible phenotypes the organism that has that gene could inherit.
Why do multiple alleles and polygenic traits produce many different phenotypes for a trait?
Why do multiple alleles and polygenic traits produce many different phenotypes for a trait? Multiple alleles have more options for alleles, producing more phenotypes. Polygenic traits show a continuum of traits as they are controlled by multiple genes.
Why does having multiple alleles lead to more possible phenotypes?
Having more than 1 or 2 alleles for a trait can greatly increase the number of phenotypes, depending on the trait’s specific pattern of inheritance. … So while you could have two people with different alleles, like one is AA and one is Ao, they would both have the same phenotype, which is blood type A.
Why is it important to have multiple alleles for a trait?
Although humans (and all diploid organisms) can have only two alleles for any given gene in genetics, multiple allele traits may exist at the population level. Thus, multiple alleles are important in promoting variation within the same species.
Can some traits be different based on multiple alleles?
Other human traits determined by multiple alleles would be hair color, hair texture, eye color, built, physical structures, etc. Most, if not all of these multiple-allele traits are in traits with very diverse phenotypic possibilities.
What are 3 exceptions to Mendel’s observations?
- Multiple alleles. Mendel studied just two alleles of his pea genes, but real populations often have multiple alleles of a given gene.
- Incomplete dominance. …
- Codominance. …
- Pleiotropy. …
- Lethal alleles. …
- Sex linkage.
What is an example of multiple alleles 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.
What does it mean if a trait has multiple alleles?
Definition and Examples
With multiple alleles, that means there are more than two phenotypes available depending on the dominant or recessive alleles that are available in the trait and the dominance pattern the individual alleles follow when combined together.
What is the definition of multiple alleles?
: an allele of a genetic locus having more than two allelic forms within a population.
Which best defines a polygenic trait?
The best definition which describes polygenic traits is : B) traits that are controlled by multiple genes. Polygenic traits basically mean the traits that are a result of multiple intertwined traits like for example skin colour.