What allele is expressed in a heterozygous genotype?
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.
What is the allele of a heterozygous?
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 it called when an allele is expressed?
Codominance Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.
Which is heterozygous genotype?
An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb.
Which is a heterozygous genotype *?
A heterozygous genotype is a genotype that has multiple different alleles present in that gene. For example, a genotype that is “Tt” would be heterozygous, where the capital “T” could represent the trait of “tall” and the lowercase “t” could represent the trait of short.
What is homozygous genotype?
(HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.
Is heterozygous the same as Monoallelic?
Monoallelic refers to a genotype affecting only one allele (heterozygous).
When both alleles of a heterozygous genotype are expressed in the phenotype the trait is described as a n trait?
Codominance. Codominance refers to the dominance in which the two alleles or traits of the genotypes (of both homozygotes) are expressed together in offspring (phenotype). There is neither a dominant nor recessive allele in cross-breeding.
What is an expressed allele called?
The expressing allele is called the dominant allele, and the repressed allele is called the recessive allele. The complete masking of the recessive allele by the dominant allele is called the complete dominance. Complete dominance is a type of Mendelian inheritance.
What are facts about heterozygous?
Heterozygous Definition. A heterozygous individual is a diploid organism with two alleles, each of a different type. Individuals with alleles of the same type are known as homozygous individuals. An allele is a variation of a gene that affects the functionality of the protein produced by the gene.
What is the phenotype of a heterozygous?
Heterozygous individuals have a phenotype somewhere in the middle, what people might call “wavy” hair. In a heterozygous individual, only one curly allele is present, and only half the amount of protein can be made. This causes the hair to be about as half as curly as in a homozygous curly individual.
What is a heterozygous hybrid?
A hybrid trait is also known as a heterozygous trait, and is the pairing of a dominant and recessive allele. The dominant allele always dictates the phenotype of the trait. Therefore, an organism that is heterozygous for a trait will have the same outward manifestation of that trait as an organism that has a dominant homozygous trait.