How differences in alleles can result in different phenotypes?
Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism. Some alleles are dominant or recessive. When an organism is heterozygous at a specific locus and carries one dominant and one recessive allele, the organism will express the dominant phenotype.
Is multiple alleles could result to the expression of more than two phenotypes?
Traits controlled by more than two alleles have multiple alleles. Many genes have multiple phenotypic effects, a property called pleiotropy. Epistasis is when a gene at one location (locus) alters the phenotypic expression of a gene at another locus.
How is it possible that there are multiple different alleles in a population and yet any individual can have only two alleles?
How is it possible that there are multiple different alleles in a population and yet any individual can have only two alleles? In the population as a whole, there are many copies of each chromosome, so any gene can have multiple alleles present in the different copies.
How do the interactions of multiple alleles affect inheritance patterns and the expression of phenotypes?
How do the interactions of multiple genes affect inheritance patterns and the expression of particular phenotypes? Polygenic traits have multiple alleles that code for the same trait. For example, in skin color, different alleles code for different proteins which make up skin color.
How many phenotypes are possible with three alleles?
Usually, more versions of a gene means more possible phenotypes. However, three alleles can produce exactly three phenotypes when those alleles are in a dominance series. In a dominance series, version A of the gene is dominant to version B, which is in turn dominant to version C. We can represent this as A > B > C.
What makes alleles different from each other?
When genes mutate, they can take on multiple forms, with each form differing slightly in the sequence of their base DNA. These gene variants still code for the same trait (i.e. hair color), but they differ in how the trait is expressed (i.e. brown vs blonde hair). Different versions of the same gene are called alleles.
How are the alleles of a gene different from each other what is its importance?
Alleles of a particular gene differ from each other on the basis of certain changes i.e. mutations in the genetic material segment of DNA or RNA. Different alleles of a gene increases the variability or variation among the organisms.
When the heterozygous genotype results in a phenotype where both alleles are fully and separately?
Codominance occurs when two heterozygous alleles are fully expressed in the phenotype of an organism. The distinct phenotypes produced by each allele are expressed.
Why can multiple alleles only be studied in populations?
Why can multiple alleles only be studied in populations? Any individual diploid organism can have, at most, two different alleles at a single locus.
What are multiple alleles can a person have more than two alleles for a single gene explain your answer?
Although individual humans (and all diploid organisms) can only have two alleles for a given gene, multiple alleles may exist in a population level, and different individuals in the population may have different pairs of these alleles.