Assertion: gene's allele | /r/HasProperty | dominant
Facets:
value: over the allele
type: OTHER
value: in that case
type: TEMPORAL
value: often
type: DEGREE
value: with respect to pku
type: OTHER
value: to another
type: TRANSITIVE-OBJECT
value: to i
type: LOCATION
value: each
type: OTHER
value: to the latter
type: OTHER
value: for not others
type: TRANSITIVE-OBJECT
value: for one trait
type: CAUSE
value: to the second
type: TEMPORAL
value: to that for yellow pods
type: TRANSITIVE-OBJECT
value: in peas
type: LOCATION
value: in co-dominance relationships
type: LOCATION
value: incompletely
type: DEGREE
Source sentences:
text: Alleles at a locus may be dominant or recessive; dominant alleles give rise to their corresponding phenotypes when paired with any other allele for the same trait, whereas recessive alleles give rise to their corresponding phenotype only when paired with another copy of the same allele.
text: When organisms are heterozygous at a gene, often one allele is called dominant as its qualities dominate the phenotype of the organism, while the other allele is called recessive as its qualities recede and are not observed.
text: If you know the genotypes of the organisms, you can determine which alleles are dominant and which are recessive.
text: For example, if the allele specifying tall stems in pea plants is dominant over the allele specifying short stems, then pea plants that inherit one tall allele from one parent and one short allele from the other parent will also have tall stems.
text: Also, there are several alleles segregating at the major gene determining the taste of PTC, particularly in African populations, and the common "taster" allele is incompletely dominant (homozygotes for this allele are more sensitive to PTC than are heterozygotes).
text: Usually, hypomorphic mutations are recessive, but haploinsufficiency causes some alleles to be dominant.
text: Often, one allele will be dominant, meaning that the living thing looks and acts as if it had only that one allele.
text: Alleles can sometimes result in different phenotypes (observable traits), with certain alleles being dominant (overriding the traits of other alleles) or, in some cases, multiple alleles acting in a codominant fashion.
text: In co-dominance relationships, neither allele is dominant, but both alleles for a specific trait are completely expressed.
text: An allele is said to be dominant if it is always expressed in the appearance of an organism (phenotype) provided that at least one copy of it is present.
text: For example, in peas the allele for green pods, G, is dominant to that for yellow pods, g.
text: If the first allele is dominant to the second then the fraction of the population that will show the dominant phenotype is p2 + 2pq, and the fraction with the recessive phenotype is q2.
text: It is a strictly relative effect between two alleles of a given gene of any function; one allele can be dominant over a second allele of the same gene, recessive to a third and co-dominant with a fourth.
text: Additionally, one allele may be dominant for one trait but not others.
text: The allele that masks the other is said to be dominant to the latter, and the allele that is masked is said to be recessive to the former.
text: Thus IA and IB alleles are each dominant to i (IAIA and IAi individuals both
text: have type A blood, and IBIB and IBi individuals both have type B blood, but IAIB individuals have both modifications on their blood cells and thus have type AB blood, so the IA and IB alleles are said to be co-dominant).
text: A "dominant" allele is dominant to a particular allele of the same gene that can be inferred from the context, but it may be recessive to a third allele, and codominant to a fourth.
text: When one allele is dominant to another, the oldest convention is to symbolize the dominant allele with a capital letter.
text: Other alleles are dominant or recessive to the wild type allele.
text: In the absence of any difference between the protein products, neither allele can be said to be dominant (see co-dominance, above).
text: Even if the two protein products are slightly different (allozymes), it is likely that they produce the same phenotype with respect to enzyme action, and again neither allele can be said to be dominant.
text: If the heterozygote and the functional-allele homozygote have identical phenotypes, the functional allele is dominant to the non-functional allele.
text: In these cases, the non-functional allele would be said to be dominant to the functional allele.
text: Thus, the A allele is dominant to the B allele with respect to PKU, but the B allele is incompletely dominant to the A allele with respect to its molecular effect, determination of PAH activity level (0.3% < 30% << 100%).
text: In that case, the two alleles are called co-dominant.