coupling phase

cou·pling phase

the physical relationship of two syntenic genes. If they are on the same chromosome, they are said to be "in coupling" or "in the cis phase"; if on opposite members of a chromosome pair, "in repulsion" or "in the trans phase."
References in periodicals archive ?
They are vertically placed halfway between two adjacent waveguides and used to weaken the mutual coupling phase between two waveguides to improve impedance matching at large scan angles.
The GEO SAR imaging processing must consider the spatial variance of slant range history and the compensation of two-dimensional coupling phase in frequency domain under long synthetic aperture time [28-31].
Coupling phase RAPD markers UBC180.328 and OPR06.268 were selected for conversion to SCAR markers on the basis of their significant associations with blue mold resistance and for the ease at which the amplified bands could be purified from agarose gels.
The information obtained and the resolving power of the analysis was enhanced by conducting the test in the coupling phase and advancing to the [F.sub.3] generation.
griseola is controlled by a single dominant gene that is linked in coupling phase with random amplified polymorphic DNA marker OPE-04 at 5.8 cM (Ferreira et al., 2000).
Linkage estimates were made by LINKEM (Vowden et al., 1995) or the square root method where the double recessive class was used to estimate non-crossover gametes (coupling phase) and linkage is estimated by the following formula: linkage estimate = 1 - 2 [(frequency of double recessives).sup.1/2.
The tight coupling phase linkage between a1 (149.0) and sh2 (149.2) on the long arm of chromosome 3 suggests that al was concurrently introgressed with sh2 into the recurrent parent.
Map orders were determined by the "order" command for coupling phase markers and the "compare" command for repulsion phase markers following three point analysis.
If it can be assumed that all loci that affect differences between the parent and the substitution line are either unlinked or in coupling phase, then for two linked loci, i and j, P([a.sub.i] [intersection] [a.sub.j]) [is greater than] P([a.sub.i])P([a.sub.j]).
All seven genetic combinations were in coupling phase and indicated close linkage of the two loci.