[Ak.sub.1] belongs to AK family loci and shows three phenotypes with different enzymatic activity, in the order [Ak.sub.1] 1> [Ak.sub.1]2 1> [Ak.sub.1]2 corresponding to the presence of two codominant alleles, [Ak.sub.1.sup.*] 1 and [Ak.sub.1.sup.*] on chromosome 9 (7).
In Caucasian populations, three distinct types of electrophoretic patterns were recognized referred to as [Ak.sub.1] l [Ak.sub.1] 2-1 and [Ak.sub.1] 2 corresponding to the presence of two codominant alleles, [Ak.sub.1.sup.*]1 and [Ak.sub.1.sup.*]2 at an autosomal locus.
Because of the presence of 2 codominant alleles
(Hp1 and Hp2), 3 major haptoglobin phenotypes are known in man: Hp 1-1, Hp 2-1, and Hp 2-2 (3).
ALAD G177C has two codominant alleles
: ALAD1 and ALAD2 (Battistuzzi et al.
Each parent exhibited a unique protein band the other lacked, but the two bands segregated in the RILs as codominant alleles
at a single locus that was assigned the marker name MatSdPro.
To estimate the frequency of a putative null allele, we can extend the approach used for the ABO blood group system in humans (e.g., Li 1970; Hedrick 1985) to multiple alleles and assume that there are five codominant alleles
and one null allele.
There are three common codominant alleles
, designated [epsilon]2, [epsilon]3, and [epsilon]4 (2).
Thirty-six of 68 DNA clones and 39 of 72 DNA clones detected segregating RFLP loci with codominant alleles
in [S.sub.1] progenies of MAD and WIF, respectively.
In Botryllus, the primary fusion/rejection response is controlled by a single, highly polymorphic locus, in which the sharing of one, or both, codominant alleles leads to fusion, and the absence of a shared allele leads to nonfusion or cytotoxic rejection (Oka and Watanabe 1957; Sabbadin 1962; Scofield et al.
The first step in the simulations generates parental allotypes by randomly drawing pairs of codominant alleles (with replacement) from a pool of n alleles, for L loci.
The biosynthesis of each protein isoform is under the control of three independent codominant alleles
, [member of]2, [member of]3, and [member of]4, located at a single Apo E gene locus on chromosome 19g13.
All protein patterns were consistent with those expected from autosomal loci with codominant alleles
. The allelic terminology utilized relative differences in electrophoretic mobility of homologous gene products with the most common allele in the Cherry Creek Reservoir population designated as 100 and the value of the origin being zero (Utter et al.