Results 41 to 50 of about 1,551,359 (398)
Chromosome cohesion: A polymerase for chromosome bridges [PDF]
Current Biology, 2000 How do cells ensure that sister chromatids produced during DNA replication stay connected with each other until their separation in anaphase? New insight is provided by the discovery of DNA polymerase kappa, which has been found to be required for building the connections between sister chromatids.
openaire +3 more sources
The genus Rubus (Rosaceae) in South Africa. IV. Natural hybridiza tion
Bothalia: African Biodiversity & Conservation, 1987 The genus Rubus L. is represented in southern Africa by the subgenera Eubatus Focke and Idaeobatus Focke. A combination o f morphological data, data on the reproductive systems of some collections and meiotic chromosome behaviour indicates that a ...
J. J. Spies +2 more
doaj +1 more source
Variability of chromosome number and morphology and gymnosperm improvement [PDF]
Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2004 The causes of monotypic and polytypic variability of the gymnosperm chromosome complex were studied. The development of karyogram and idiograms of the species should be applied in the aim of upgrading the breeding method and technique.
Tucović Aleksandar +2 more
doaj +1 more source
Siberian 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
High resolution physical mapping of single gene fragments on pachytene chromosome 4 and 7 of Rosa [PDF]
, 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
PLoS 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 Viçoso, D. Bachtrog
semanticscholar +1 more source
Iheringia: Série Zoologia, 2004 Cytogenetical studies based on conventional coloration by Giemsa, C-banding and Ag-NOR were performed on 2 species of bats from the vespertilionid family: Lasiurus cinereus (Beauvois, 1796) and Lasiurus ega (Gervais, 1856). The 2n was 28 and FN was 48 in
Sandra Regina de Carvalho Marchesin +1 more
doaj +1 more source
A fragmented metazoan organellar genome [PDF]
, 2008 Background: Animal mitochondrial (mt) genomes are characteristically circular molecules of ~16–20 kb. Medusozoa (Cnidaria excluding Anthozoa) are exceptional in that their mt genomes are linear and sometimes subdivided into two to presumably four ...
Erpenbeck, Dirk +2 more
core +1 more source
Unanswered Questions Regarding Sex and BMP/TGF-β Signaling
Journal of Developmental Biology, 2018 Crosstalk between the BMP and TGF-β signaling pathways regulates many complex developmental processes from the earliest stages of embryogenesis throughout adult life. In many situations, the two signaling pathways act reciprocally. For example, TGF-&
Tapan A. Shah, Melissa B. Rogers
doaj +1 more source
Chromosomes and phylogeny in Crepis, [PDF]
, 1930 P6 ...
Babcock, E. B. (Ernest Brown), 1877-1954 +1 more
core +2 more sources