Results 211 to 220 of about 191,808 (260)

Mitotic Antipairing of Homologous Chromosomes

2022
Chromosome organization is highly dynamic and plays an essential role during cell function. It was recently found that pairs of the homologous chromosomes are continuously separated at mitosis and display a haploid (1n) chromosome set, or "antipairing," organization in human cells. Here, we provide an introduction to the current knowledge of homologous
Lisa L, Hua, Christian J, Casas, Takashi, Mikawa   +2 more
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Homologous chromosome pairing in wheat

Journal of Cell Science, 1999
ABSTRACT Bread wheat is a hexaploid (AABBDD, 2n=6x=42) containing three related ancestral genomes, each having 7 chromosomes, giving 42 chromosomes in diploid cells. During meiosis true homologues are correctly associated in wild-type wheat, but a degree of association of related chromosomes (homoeologues) occurs in a mutant (ph1b).
E, Martínez-Pérez, P, Shaw, S, Reader, L, Aragón-Alcaide, T, Miller, G, Moore   +5 more
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The colocalization transition of homologous chromosomes at meiosis

Physical Review E, 2008
Meiosis 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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Chromosome homology and evolution of emydid turtles

Chromosoma, 1976
G-, 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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Do homologous chromosomes differ?

Cytogenetics and Cell Genetics, 2008
Two 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.
D.H. Moore II, A.V. Carrano, B.H. Mayall
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Homologous chromosome pairing

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1977
Abstract Commonly accepted precepts are challenged : (1) that homologous chromosome pairing is normally mediated by nuclear envelope attachment sites; (2) that crossover site establishment awaits synaptic completion; and (3) that it is the function of the synaptonemal complex to hold homologues in register so that equal crossing over ...
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Chimpanzee chromosome 12 is homologous to human chromosome arm 2q

Cytogenetics and Cell Genetics, 2008
Most of the 46 human chromosomes find their counterparts in the 48 chimpanzee chromosomes except for chromosome 2 which has been hypothesized to have been derived from a centric fusion of two chimpanzee acrocentric chromosomes. These two chromosomes correspond to the human chromosomes 2p and 2g.
N C, Sun, C R, Sun, T, Ho
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Chromosomal homology in southern Akodon

Experientia, 1982
Differential 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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