Quick Answer: What occurs when both alleles are expressed equally?

When both alleles are expressed equally?

Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed.

What do you call it when two alleles are expressed equally at the same time?

codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously.

What happens when both alleles are the same?

If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous. Though the term allele was originally used to describe variation among genes, it now also refers to variation among non-coding DNA sequences.

What is it called when both alleles are identical?

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. Some alleles are dominant or recessive.

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When both alleles are expressed equally in the heterozygote?

Incomplete dominance is the expression of two contrasting alleles such that the individual displays an intermediate phenotype. Codominance is a variation on incomplete dominance in which both alleles for the same characteristic are simultaneously expressed in the heterozygote.

What is the inheritance pattern when both alleles are expressed equally?

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

What pleiotropy means?

genetics. : the phenomenon of a single gene influencing two or more distinct phenotypic traits : the quality or state of being pleiotropic In genetics, there’s a concept called pleiotropy, which posits that a single gene can influence multiple traits. [

What is codominance explain?

Codominance is a heterozygous condition in which both alleles at a gene locus are fully expressed in the phenotype. Alleles which show an independent effect are called as Codominant alleles. In codominance, neither phenotype is completely dominant. The best example of codominance is ABO blood group.

When would a pair of alleles be heterozygous?

When the two alleles are not identical, the pair is heterozygous. In contrast, an identical pair is homozygous. The traits actually expressed by a heterozygous pair of alleles depend on the relationship between the two alleles and possibly the effects of other genes.

What does it mean when an allele is recessive?

Recessive refers to a type of allele which will not be manifested in an individual unless both of the individual’s copies of that gene have that particular genotype.

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