homologous chromosome


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homologous chromosome

One of a pair of chromosomes that contain genes for the same traits; one is maternal in origin, the other paternal.
See also: chromosome
References in periodicals archive ?
The main cause of spermatogenic block in the hinny is probably a failure of pairing of homologous chromosomes which results in unfinished synapsis and incomplete meiosis.
This exchange is between adjacent chromatids on the two homologous chromosomes of a bivalent.
Additive effects for seed cotton yield were positive and significantly different than zero for all cultivars and CS-B02; however, no chromosome from 3-79 had additive effects significantly greater than additive effects of the homologous chromosome in TM-1.
Therefore, homologous chromosomes are similar and pairing behaviour is the empirical observation needed to infer homology.
The Ph1 locus largely operates premeiotically to guarantee the association and alignment of homologous chromosomes (Feldman, 1966; Martinez et al.
Establishing these markers for the apospory gene will be a valuable aid to positioning other markers near the apomixis gene locus and could be useful in tracking the homologous chromosomes in meiotic cells during aposporous embryo sac development.
Different lengths of the same arm (and band/locus, where applicable) from homologous chromosomes were combined to mean values and then represented in the haploid complement of the idiogram.
During meiosis homologous chromosomes pair and undergo reciprocal genetic exchange termed crossover.
Also, in the present study, it was probable that the proper alignment of the homologous chromosomes was not possible due to the reciprocal translocation, thereby resulting in unbalanced gametes.
Whole-genome sequencing generates a single consensus sequence without assigning variants to specific homologous chromosomes.
In humans, the somatic cells (or nonsex cells) have two sets of homologous chromosomes in each cell (each somatic cell has 23 pairs of homologous chromosomes for a total of 46 chromosomes).
At this point the homologous chromosomes are separated, and the cell divides, giving the intermediate cells two versions of a chromosome from each homologous pair.