recessive

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recessive

 [re-ses´iv]
1. tending to recede.
2. in genetics, incapable of expression unless the responsible allele is carried by both members of a set of homologous chromosomes. See also recessive gene.
3. an allele or trait that has this characteristic.

re·ces·sive

(rē-ses'iv),
1. Drawing away; receding.
2. In genetics, denoting a trait due to a particular allele or alleles at a single locus that does not manifest itself unless mutant alleles are present on both homologous chromosomes of a pair.

recessive

/re·ces·sive/ (re-ses´iv)
1. tending to recede; in genetics, incapable of expression unless the responsible allele is carried by both members of a pair of homologous chromosomes.
2. a recessive allele or trait.

recessive

(rĭ-sĕs′ĭv)
adj.
1. Tending to go backward or recede.
2.
a. Genetics Of, relating to, or designating an allele that does not produce a characteristic effect when present with a dominant allele.
b. Of or relating to a trait that is expressed only when the determining allele is present in the homozygous condition.
n. Genetics
1. A recessive allele or trait.
2. An organism having a recessive trait.

re·ces′sive·ly adv.

recessive

[rises′iv]
Etymology: L, recedere
pertaining to or describing a gene, the effect of which is masked or hidden if there is a dominant gene at the same locus. If both genes are recessive and produce the same trait, the trait is expressed in the individual.

recessive

Genetics A genetic trait that is not phenotypically expressed in a heterozygous or partially heterozygous cell, but rather only in a homozygous or hemizygous state. See Phenotype, Trait. Cf Dominant.

re·ces·sive

(rĕ-ses'iv)
1. Drawing away; receding.
2. genetics Denoting a trait due to a particular allele that does not manifest itself in the presence of other alleles that generate traits dominant to it.

recessive

Pertaining to an alternative form of a gene (ALLELE) that produces an effect only when carried by both members of the pair of homologous chromosomes (only when HOMOZYGOUS). People with heterozygous alleles for a condition are called carriers. A recessive gene has no effect in the presence of a DOMINANT allele either because of its inactivity or because of the absence of a product.

Recessive

Refers to an inherited characteristic or trait that is expressed only when two copies of the gene responsible for it are present.

autosomal-recessive inheritance

genetic inheritance pattern where an abnormal gene (inherited from one parent) is non-dominant over the normal gene (inherited from the other parent); the individual does not show the abnormal gene-related characteristics, yet carries a copy of the abnormal gene which may pass to the progeny; if the abnormal gene is inherited from both parents, the individual will show abnormal gene characteristics

re·ces·sive

(rĕ-ses'iv)
Drawing away; receding.
References in periodicals archive ?
Because, for example, rare recessive alleles benefited more from the effects of associations than did rare dominant alleles, fixation of recessive beneficials may be more likely than would be predicted from a single-locus model, in a corollary to Haldane's Sieve.
High inbreeding depression, selective interference among loci, and the threshold selfing rate for purging recessive lethal mutations.
However, when the partially recessive allele is very rare, as would be expected with deleterious alleles, the expected additive variance always increases if d is greater than about 0.
With complete recessivity (d = 1), the heritability is expected to increase when the recessive allele is rare, and the absolute magnitude of this increase can approach 0.