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Chromosomal homology in southern Akodon
Experientia, 1982Differential staining (G and C) of southern South American Akodon are presented. A. olivaceus, A. longipilis and A. sanborni all have the same karyotype (2n = 52, NF = 58). A virtually identical band sequence is observed. This situation is interpreted using the canalization model of chromosomal evolution which stresses an optimum karyotype for each ...
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Do homologous chromosomes differ?
Cytogenetic and Genome Research, 1973Two statistics are derived for testing whether measurements on otherwise indistinguishable chromosome pairs differ. The power of these tests is shown as well as a method for estimating the true homolog means. The tests and estimation procedures are simple to compute, and their use is illustrated on chromosome data.
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Chromosome ends initiate homologous chromosome pairing during rice meiosis
Plant PhysiologyAbstract During meiotic prophase I, chromosomes undergo large-scale dynamics to allow homologous chromosome pairing, prior to which chromosome ends attach to the inner nuclear envelope and form a chromosomal bouquet. Chromosome pairing is crucial for homologous recombination and accurate chromosome segregation during meiosis.
Hanli You +11 more
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Homologous Association of Oppositely Imprinted Chromosomal Domains
Science, 1996Human chromosome 15q11-q13 encompasses the Prader-Willi syndrome (PWS) and the Angelman syndrome (AS) loci, which are subject to parental imprinting, a process that marks the parental origin of certain chromosomal subregions. A temporal and spatial association between maternal and paternal chromosomes 15 was observed in human T lymphocytes by three ...
J M, LaSalle, M, Lalande
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Chromosome homology and evolution of emydid turtles
Chromosoma, 1976G-, C-, Q-banding and standard karyotypic analyses were used to study the chromosomal relationships of emydid turtles. Ten species of emydids were used (5 batagurines and 5 emydines) which samples all of the karyotypic variation known for the Emydidae. Data from a testudinid and a chelydrid are compared to the emydids.
J W, Bickham, R J, Baker
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The colocalization transition of homologous chromosomes at meiosis
Physical Review E, 2008Meiosis is the specialized cell division required in sexual reproduction. During its early stages, in the mother cell nucleus, homologous chromosomes recognize each other and colocalize in a crucial step that remains one of the most mysterious of meiosis. Starting from recent discoveries on the system molecular components and interactions, we discuss a
NICODEMI, MARIO, B. Panning, A. Prisco
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Cytogenetic and Genome Research, 2010
Substantial effort has been made to elucidate karyotypic evolution of phyllostomid bats, mostly through comparisons of G-banding patterns. However, due to the limited number of G-bands in respective karyotypes and to the similarity of non-homologous bands, an accurate evolutionary history of chromosome segments remains questionable.
C G, Sotero-Caio +8 more
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Substantial effort has been made to elucidate karyotypic evolution of phyllostomid bats, mostly through comparisons of G-banding patterns. However, due to the limited number of G-bands in respective karyotypes and to the similarity of non-homologous bands, an accurate evolutionary history of chromosome segments remains questionable.
C G, Sotero-Caio +8 more
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A ?zebra? chromosome arising from multiple translocations involving non-homologous chromosomes
Chromosoma, 1993An alloplasmic wheat line carrying a 'zebra' chromosome z5A was isolated from the derivatives of an Elymus trachycaulus x Triticum aestivum cv Chinese Spring hybrid. Chromosome z5A was named zebra because of its striped genomic in situ hybridization pattern. z5A consists of four chromosome segments derived from E.
J, Jiang, B S, Gill
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Phase separation drives pairing of homologous chromosomes
Current Genetics, 2020Pairing of homologous chromosomes is crucial for ensuring accurate segregation of chromosomes during meiosis. Molecular mechanisms of homologous chromosome pairing in meiosis have been extensively studied in the fission yeast Schizosaccharomyces pombe.
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Chromosome territory positioning of conserved homologous chromosomes in different primate species
Chromosoma, 2006Interphase chromosomes form distinct spatial domains called chromosome territories (CTs). The position of CTs is known not to be at random and is related to chromosome size and gene density. To elucidate how CTs are arranged in primate proliferating fibroblasts and whether the radial position of CTs has been conserved during primate evolution, several ...
Laia, Mora +3 more
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