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3,457 results for “chromosomes”
Figure 1 in Comparison of the chromosome banding patterns in three species of social voles (Microtus irani karamani, M. schidlovskii, M. anatolicus) from Turkey
Figure 1. Collecting sites of M. irani karamani (1), M. schidlovskii (2), and M. anatolicus (3) in Turkey. The numbering of sampling localities corresponds to data in Table 1. Table 1. Studied localities of three Microtus species in Turkey. The numbering of the sampling sites corresponds to data in Figure 1.
Chromosome-level genome assembly of a living fossil, the Atlantic Horseshoe Crab Limulus polyphemus
<p>Associated data for male Atlantic horseshoe crab <em>Limulus polyphemus </em>chromosome-scale genome and annotations, including genome (FASTA), structural gene annotations (GFF3), functional annotations (TSV), coding sequences (CDS), protein sequences (PEP), RepeatModeler library (FA.CLASSIFIED), and repeat annotations (OUT).</p> <p>qaLimPoly3.1 - Publication analyses were completed with this genome. </p> <p>qaLimPoly3.3 - This is the current reference assembly. Assembly updated with Sanger sequencing based edits of Chr11 and removal of adapter contamination. Gene annotations updated with curation of canonical proclotting genes. Repeat annotations updated with curation of repeat elements ltr-1_family-1, ltr-1_family-4, and ltr-1_family-26. </p> <p>HSC_Genomic_FacC_860F_PREMIX_CNNJ42_1.ab1 and HSC_Genomic_FacC_1544R_PREMIX_CNNJ43_2.ab1 are Sanger sequenced PCR products for Lp_g42129 (Factor C) from primers FacC_860F.fasta and FacC_1544R.fasta.</p>
Fig. 4. Chromosomes 9 and 11 from different L. spenceri populations. Three representative chromosomes from each animal demonstrate a in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 4. Chromosomes 9 and 11 from different L. spenceri populations. Three representative chromosomes from each animal demonstrate a highly conserved DAPI negative region in the long arms of chromosome 9. A DAPI negative region is observed in the long arm of chromosome 11, but only in the Central Site juveniles and in only one matched chromosome of the Northern Site x Central Site tadpole hybrid. Arrows indicate the chromosome 11 DAPI negative region. Asterisks indicate the paired submetacentric chromosome 11 matched pair of the Northern Site x Central Site tadpole hybrid.
Fig. 2 in Heterochromatin distribution and chromosomal mapping of microsatellite repeats in the genome of Frieseomelitta stingless bees (Hymenoptera: Apidae: Meliponini)
Fig. 2. Metaphase spreads of females of Frieseomelitta varia (a, g), Frieseomelitta sp. n. (b, h), Frieseomelitta meadewaldoi (c, i), Frieseomelitta dispar (d, j), Frieseomelitta francoi (e, k), and Frieseomelitta doederleini (f, l) afer basespecific fluorochrome staining. The arrows indicate the GC-rich regions.
Fig. 3 in Heterochromatin distribution and chromosomal mapping of microsatellite repeats in the genome of Frieseomelitta stingless bees (Hymenoptera: Apidae: Meliponini)
Fig. 3. Metaphase spreads of females of Frieseomelitta species afer fluorescence in situ hybridizaton with microsatellite probes.
Fig. 1. C in Heterochromatin distribution and chromosomal mapping of microsatellite repeats in the genome of Frieseomelitta stingless bees (Hymenoptera: Apidae: Meliponini)
Fig. 1. C-banded karyotypes of females of Frieseomelitta varia (a), Frieseomelitta doederleini (b), Frieseomelitta sp. nov. (c), Frieseomelitta meadewaldoi (d), Frieseomelitta dispar (e), and Frieseomelitta francoi (f). (M = metacentric, A = acrocentric, MT = metacentric with centromeric, and telomeric C-bands, AM = pseudoacrocentric).
Figure 2. – A in Transmission of Induced Chromosomal Aberrations through Successive Mitotic Divisions in Human Lymphocytes after In Vitro and In Vivo Radiation
Figure 2. – A: Transverse section of the brown meagre otolith. B: Focus on annual marks (red points).
Figure 1 in Transmission of Induced Chromosomal Aberrations through Successive Mitotic Divisions in Human Lymphocytes after In Vitro and In Vivo Radiation
Figure 1. – Photograph of the proximal (left) and distal (right) sides of the brown meagre sagittae (LT = 497 mm). Scale bar = 1 cm.
Fig. 3. Representative C in Allopatric chromosomal variation in Nematocharax venustus Weitzman, Menezes & Britski, 1986 (Actinopterygii: Characiformes) based on mapping of repetitive sequences
Fig. 3. Representative C-banded karyotypes of Nematocharax venustus from (a) Almada, Gongogi 1, Gongogi 2, Gongogi 3, Jequitinhonha 1, Jequitinhonha 2 and (b) Upper Contas. Bar = 5 µm.
Fig. 5 in Allopatric chromosomal variation in Nematocharax venustus Weitzman, Menezes & Britski, 1986 (Actinopterygii: Characiformes) based on mapping of repetitive sequences
Fig. 5. Representative metaphases for each different pattern reported in populations of Nematocharax venustus showing the hybridization with 18S (magenta) and 5S rDNA probes (green) (double-FISH) and only DAPI staining for (a, b) Almada, Gongogi 1, and Jequitinhonha 1; (c, d) Gongogi 3; (e, f) Gongogi 2; (g, h) Jequitinhonha 2; and (i, j) Upper Contas. The asterisks indicate the chromosomes marked by FISH. Bars = 5 µm.
Fig. 1 in Allopatric chromosomal variation in Nematocharax venustus Weitzman, Menezes & Britski, 1986 (Actinopterygii: Characiformes) based on mapping of repetitive sequences
Fig. 1. Map of Brazil (a) and collection sites (b) of Nematocharax venustus along the Almada (Almada), Contas (Upper Contas, Gongogi 1, 2, and 3), and Jequitinhonha River basins (Jequitinhonha 1 and 2) in the states of Bahia and Minas Gerais.
Fig. 4 in Allopatric chromosomal variation in Nematocharax venustus Weitzman, Menezes & Britski, 1986 (Actinopterygii: Characiformes) based on mapping of repetitive sequences
Fig. 4. Chromosomes of distinct populations of Nematocharax venustus after silver nitrate staining (Ag-NORs), base-specific fluorochrome staining (CMA 3 /DA/DAPI) and FISH with 18S (magenta) and 5S rDNA probes (green). Bar = 5 µm. The FISH with ribosomal probes confirmed the The first pattern, shared by specimens from the Almada occurrence of a single NOR system in most populations. The River and some populations from the Contas (Gongogi 1) only exception refers to one sample in the Jequitinhonha River and Jequitinhonha River basins (Jequitinhonha 1), includes basin (named Jequitinhonha 2), which presented additional 18S rRNA genes at terminal region of short arms of a 18S rDNA sites on long arms in one homologous from pair 8 sm pair (equivalent to Ag-NORs) and 5S rRNA genes at and on short arms of a single chromosomes from pair 10. This interstitial region on short arms of two pairs (16 – sm, and procedure was also informative in revealing four distribution 21 – st). The population from Gongogi 3 differs from this patterns of 18S and 5S rDNA in N. venustus (Fig. 4). pattern by presenting heteromorphic 5S rDNA cistrons
Fig. 3 in Microstructural chromosome reorganization in the genus Trichomycterus (Siluriformes: Trichomycteridae)
Fig. 3. Distribution pattern of 5S (green) and 18S rDNA sites (red) in metaphase of nine species of Trichomycterus analyzed: a) T. davisi; b) T. diabolus; c) T. paulinus; d) Trichomycterus sp. 3; e) Trichomycterus sp. 2; f) T. iheringi; g) T. mimonha; h) T. zonatus; and i) Trichomycterus sp. 1. Note co-localization between 5S and 18S rDNA sites occurring at least in one chromosome pair in all the species and are evidenced by the white arrows. Bar =10µm.
FIGURE 4 in Population structuration and chromosomal features homogeneity in Parodon nasus (Characiformes: Parodontidae): A comparison between Lower and Upper Paraná River representatives
FIGURE 4 | Molecular data of Parodon nasus from La Plata basin. A. Haplotype network showing the relationship among the sequences. B. Structural population inference by BAPs (K = 2) for the four populations showing the division between Upper and Lower Paraná River systems; C. Bayesian inference tree showing the phylogenetic relationship of the sequences (numbers on the branches correspond to posterior probability; numbers in parentheses correspond to specimen voucher ID).
FIGURE 3 in Population structuration and chromosomal features homogeneity in Parodon nasus (Characiformes: Parodontidae): A comparison between Lower and Upper Paraná River representatives
FIGURE 3 | Karyotypes of the four populations of Parodon nasus submitted to fluorescence in situ hybridization using 18S rDNA (green signal) and 5S rDNA (red signal) probes. Chromosomes with signals for the pPh2004 probe were highlighted in boxes. A. Cuiabá River; B. Mogi-Guaçu River; C. Passa Cinco River; D. Paiol Grande stream. Scale bar = 10µm.
FIGURE 1 in Population structuration and chromosomal features homogeneity in Parodon nasus (Characiformes: Parodontidae): A comparison between Lower and Upper Paraná River representatives
FIGURE 1 | A. Adult specimen of Parodon nasus. B. Partial map of the South America showing the La Plata basin, the principal rivers of the basin, and the collection sites of the P. nasus species analyzed.
FIGURE 5 in Tracking the evolutionary pathways among Brazilian Lebiasina species (Teleostei: Lebiasinidae): a chromosomal and genomic comparative investigation
FIGURE 5 | First Row: Mitotic chromosome spreads of Lebiasina minuta males after CGH— interspecific comparisons (A–D). Male-derived genomic probe of L. minuta (A); L. melanoguttata (B); L. bimaculata (C) hybridized against male metaphase plates of L. minuta (D). Second Row: Mitotic chromosome spreads of Lebiasina minuta males after CGH— intraspecific comparisons (E–H). DAPI image (E); Male-derived genomic probe of L. minuta (F); Female-derived genomic probe of L. minuta (G) hybridized against male metaphase plates of L. minuta (H). The common genomic regions of both compared karyomorphs are depicted in yellow. Scale bar = 5 µm.
FIGURE 2 in Population structuration and chromosomal features homogeneity in Parodon nasus (Characiformes: Parodontidae): A comparison between Lower and Upper Paraná River representatives
FIGURE 2 | Karyotypes of the four populations of Parodon nasus submitted to the C-banding procedure. A. Cuiabá River; B. Mogi-Guaçu River; C. Passa Cinco River; D. Paiol Grande stream. Scale bar = 10µm.
FIGURE 4 in Tracking the evolutionary pathways among Brazilian Lebiasina species (Teleostei: Lebiasinidae): a chromosomal and genomic comparative investigation
FIGURE 4 | Whole chromosome painting (WCP) highlighting the first chromosome pair of Lebiasina minuta completely hybridized with the probe from the first chromosome pair of L. bimaculata.
FIGURE 6 in Tracking the evolutionary pathways among Brazilian Lebiasina species (Teleostei: Lebiasinidae): a chromosomal and genomic comparative investigation
FIGURE 6 | Representative idiograms of L. bimaculata (A); L. melanoguttata (B) and L. minuta (C) highlighting the distribution of the 18S (green) and 5S (red) rDNA sequences; (CGG)n microsatellite (blue) and C-positive heterochromatin (black): Data for L. bimaculata and L. melanoguttata are from Sassi et al. (2019).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.