When the phenotype of both alleles are exhibited in the heterozygote?

codominance phenotypes of both alleles are exhibited in the heterozygote
complete dominance phenotypes of the heterozygote and dominant homozygote are indistinguishable
cystic fibrosis disorder caused by a recessive allele for a chloride channel protein

When both alleles of a heterozygote genotype are expressed in the phenotype?

Codominance, as in human blood type, is a form of inheritance in which both alleles are expressed equally in the phenotype of the heterozygote.

When both alleles are expressed in heterozygous individuals this is called?

Codominance. the relation between two alleles of a gene, such that both alleles are phenotypically expressed in heterozygous individuals.

Which allele is expressed in the heterozygote?

An allele that is fully expressed in the phenotype of a heterozygote. Only need 1 copy of dominant allele to show dominant trait. An allele whose phenotypic effect is not observed in a heterozygote – it is “masked” or hidden. Need 2 copies of recessive allele to show recessive trait.

What is the inheritance pattern called when the heterozygote exhibits the phenotype of both alleles but not as an intermediate form as seen in incomplete dominance?

This pattern of inheritance is described as incomplete dominance, meaning that one of the alleles appears in the phenotype in the heterozygote, but not to the exclusion of the other, which can also be seen. The allele for red flowers is incompletely dominant over the allele for white flowers.

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What is it called when both alleles are expressed?


Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. … In codominance, however, neither allele is recessive and the phenotypes of both alleles are expressed.

What is phenotype example?

Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.

What do multiple alleles mean?

: an allele of a genetic locus having more than two allelic forms within a population.

Is AA heterozygous or homozygous?

Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.

Is true breeding always homozygous?

A true breeding is a kind of breeding wherein the parents would produce offspring that would carry the same phenotype. This means that the parents are homozygous for every trait. … With plants, true breeding occurs when plants produce only offspring of the same variety when they self-pollinate.

What are multiple alleles give an example?

An excellent example of multiple allele inheritance is human blood type. Blood type exists as four possible phenotypes: A, B, AB, & O. There are 3 alleles for the gene that determines blood type. (Remember: You have just 2 of the 3 in your genotype — 1 from mom & 1 from dad).

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