recessive allele


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to recessive allele: codominant allele

recessive allele

or

recessive gene

an ALLELE that only shows its effect in the PHENOTYPE when present in a HOMOZYGOTE. When paired with a dominant allele the effect of the recessive allele is hidden. see RECESSIVE CHARACTER.
References in periodicals archive ?
sieve" selects against deleterious recessive alleles, allowing only
The spotting of the recessive allele usually involves the distal legs and top of head before other areas and tends to result in reasonably recognizable patterns of spotting.
For a recessive allele to be expressed, both alleles in the pair must be recessive.
A recessive allele may be masked by a dominant allele, which leads to the expression "hidden recessive." Dominant alleles are never hidden by their related recessive alleles.
The notation AB/ab signifies that the dominant alleles (A,B) of two different gene loci are on one chromosome and the recessive alleles (a,b) are on the homologous chromosome.
For those based on the inheritance of recessive alleles, it is not the presence of two mutant alleles that causes the malady, but the absence of a normal allele.
Although the recessive allele (a) in the A locus can lead to black genotyped sheep, the dominant allele ([E.sup.d]) in E locus is epistatic over A alleles and produces black genotypes [22,23].
Proportion of dominant and recessive allele in parents was lesser than unity showing that recessive genes were in excess (Table 3).
* Chocolate or yellow pups can result from a breeding only if both parents carry a recessive allele at the appropriate locus.
But we have shown that the rise of the dominant allele (per generation) was four times as fast as the rise of the recessive allele (18% vs.
1 Given each parent's genetic makeup, assign an uppercase letter for a dominant allele (one that expresses a visible trait) and a lowercase letter for a recessive allele (one that is masked by a dominant trait).
The segregation of the variant (bluish) type and the normal (greenish) type was 13:27, suggesting the existence of a recessive allele at a single locus.