homologous chromosomes


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to homologous chromosomes: nonhomologous chromosomes

homologous chromosomes

pl n
(Biology) two chromosomes, one of paternal origin, the other of maternal origin, that are identical in appearance and pair during meiosis
References in periodicals archive ?
Sixty-four spores per sporangium were found, and homologous chromosomes paired normally, which suggests it is a sexually reproducing diploid (Wang et al.
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.
Of these, 44 are known as autosomes and consist of matched pairs of chromosomes, known as homologous chromosomes.
This demonstration further reinforces the idea that the synapse of homologous chromosomes is a hallmark of meiosis because the bi-orientation of nonsister kinetochores (two kinetochores from homologous chromosomes) results in the physical separation of the homologous chromosomes (Luo, 2009).
Each of the homologous chromosomes has 2 alpha genes; thus, there are 4 functional alpha genes in total.
The banding pattern obtained was indeed consistent between homologous chromosomes in each chromosomal pair.
The DNA chromosomes within each molecule are composed of two separate polynucleotide strands, each arranged with 23 pairs of homologous chromosomes.
After pachytene, bivalents have no chiasma; homologous chromosomes lie parallel to each other, and condense gradually during prophase I and metaphase I.