Results 51 to 60 of about 1,419,260 (349)

Direct and indirect control of the initiation of meiotic recombination by DNA damage checkpoint mechanisms in budding yeast [PDF]

open access: yes, 2013
Meiotic recombination plays an essential role in the proper segregation of chromosomes at meiosis I in many sexually reproducing organisms. Meiotic recombination is initiated by the scheduled formation of genome-wide DNA double-strand breaks (DSBs).
AJ MacQueen   +40 more
core   +3 more sources

A new continuous cell line from the mosquito Psorophora confinnis (Diptera: Culicidae) and its susceptibility to infections with some arboviruses

open access: yesMemorias do Instituto Oswaldo Cruz, 2001
A new cell line, PC-0199-BR, was established from embryonated eggs of the mosquito Psorophora confinnis. To date (September 2000) it has had 62 continuous passages.
Felio J Bello   +6 more
doaj   +1 more source

The self-organization of genomes [PDF]

open access: yes, 2010
Menzerath-Altmann law is a general law of human language stating, for instance, that the longer a word, the shorter its syllables. With the metaphor that genomes are words and chromosomes are syllables, we examine if genomes also obey the law.
Ferrer Cancho, Ramon   +1 more
core   +2 more sources

SCREENING FOR BIOMORPHOLOGICAL AND CYTOGENETIC FEATURES OF POLEMONIUM CAERULEUM L. AFTER COLCHICINE APPLICATION

open access: yesSiberian Journal of Life Sciences and Agriculture, 2023
Background. Currently, it is quite relevant in breeding to create varieties with high yields of raw materials and the content of biologically active compounds. This work aim is to identify promising forms of P. caeruleum L. is for further inclusion in
Firdaus M. Khazieva   +4 more
doaj   +1 more source

Why genes evolve faster on secondary chromosomes in bacteria [PDF]

open access: yes, 2010
In bacterial genomes composed of more than one chromosome, one replicon is typically larger, harbors more essential genes than the others, and is considered primary.
Cooper, Vaughn S.   +3 more
core   +1 more source

High resolution physical mapping of single gene fragments on pachytene chromosome 4 and 7 of Rosa [PDF]

open access: yes, 2015
Background: Rosaceae is a family containing many economically important fruit and ornamental species. Although fluorescence in situ hybridization (FISH)-based physical mapping of plant genomes is a valuable tool for map-based cloning, comparative ...
Khrustaleva, Ludmila I   +2 more
core   +2 more sources

Numerous Transitions of Sex Chromosomes in Diptera

open access: yesPLoS Biology, 2015
Many species groups, including mammals and many insects, determine sex using heteromorphic sex chromosomes. Diptera flies, which include the model Drosophila melanogaster, generally have XY sex chromosomes and a conserved karyotype consisting of six ...
Beatriz Vicoso, D. Bachtrog
semanticscholar   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Cytogenetic abnormalities in patients with hematological malignancies in Lahore city, Pakistan

open access: yesBrazilian Journal of Biology, 2021
Hematological and hematopoietic cells malignancies of the genes and hematopoietic cells are associated with the genetic mutation, often at the chromosomal level.
U. A. Awan   +10 more
doaj   +1 more source

Immunocytochemical localization of chromatin regions UV-microirradiated in S phase or anaphase : Evidence for a territorial organization of chromosomes during cell cycle of cultured Chinese hamster cells [PDF]

open access: yes, 1983
Chinese hamster cells (M3-1 line) in S phase were laser-UV-microirradiated (λ, 257 nm) at a small site of the nucleus. Cells were fixed either immediately thereafter or in subsequent stages of the cell cycle, including prophase and metaphase.
Avivi   +33 more
core   +1 more source

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