When both alleles contribute to the phenotype it is called?
codominance. Situation where both alleles contribute to the phenotype. multiple alleles. Genes that have more than two alleles. polygenic trait.
What is it called when both alleles are different for a trait?
Each pair of alleles represents the genotype of a specific gene. Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ. Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism.
What is the process in which two genes segregate independently called?
The Principle of Independent Assortment describes how different genes independently separate from one another when reproductive cells develop. Independent assortment of genes and their corresponding traits was first observed by Gregor Mendel in 1865 during his studies of genetics in pea plants.
What is the term heterozygous mean?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
What is meant by epistasis?
Epistasis is genetic phenomenon that is defined by an interaction of genetic variation at two or more loci to produce a phenotypic outcome that is not predicted by the additive combination of effects attributable to the individual loci.
What phenotype means?
The term “phenotype” refers to the observable physical properties of an organism; these include the organism’s appearance, development, and behavior. An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.
When both alleles are expressed in the heterozygous state?
When both alleles express their effect on being present together, the phenomenon is called codominance. As a result the heterozygous condition has a phenotype different from either of homozygous genotypes, e.g. AB blood group in humans.
When both traits are exhibited in the phenotype It is said that the alleles display?
Codominance refers to the dominance in which the two alleles or traits of the genotypes (of both homozygotes) are expressed together in offspring (phenotype).
When both alleles are expressed?
If both alleles are dominant, it is called codominance?. The resulting characteristic is due to both alleles being expressed equally. An example of this is the blood group AB which is the result of codominance of the A and B dominant alleles.