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345 results for “Sex chromosome”
Figure 3. Male C in Sex chromosome polymorphism in Bulgarian populations of Microtus guentheri (Danford & Alston, 1880)
Figure 3. Male C-banded karyotype of the Guenther's vole from Strandzha Mountain.
Fig. 50 in Phylogeny Of Phyllostomid Bats (Mammalia: Chiroptera): Data From Diverse Morphological Systems, Sex Chromosomes, And Restriction Sites
Fig. 50. Degree of external uterine fusion (character 131) optimized onto the strict consensus tree from our character congruence analysis. The ''intermediate'' state of external uterine fusion (character 131: horns one quarter the length of uterine body) is derived from the simplex condition, suggesting that external uterine fusion is not progressive. The equivocal optimization within Phyllostominae is due to missing data in Lonchorhinini. To prevent an equivocal reconstruction for the base of the clade that includes all phyllostomids except desmodontines, we examined trees in which the position of Brachyphylla was resolved and fixed the node at the base of the clade that includes all phyllostomids except desmodontines with the state that occurred under the two alternative placements for this genus.
Fig. 18 in Phylogeny Of Phyllostomid Bats (Mammalia: Chiroptera): Data From Diverse Morphological Systems, Sex Chromosomes, And Restriction Sites
Fig. 18. Closeup view of the lateral column(s) of vibrissae and vibrissal papillae in A. Phyllostomus hastatus (AMNH 202308). B. Rhinophylla pumilio (AMNH 267163). C. Sphaeronycteris toxophyllum (AMNH 194213). D. Noctilio leporinus (AMNH 267408). Scale bar = 5 mm.
Fig. 13. A in Phylogeny Of Phyllostomid Bats (Mammalia: Chiroptera): Data From Diverse Morphological Systems, Sex Chromosomes, And Restriction Sites
Fig. 13. A. Baker et al.'s (1989; redrawn after fig. 2) consensus tree based on morphology, immunology, and karyology. B. Van Den Bussche's (1992; redrawn from fig. 2) tree derived from mapping restriction sites onto the Baker et al. (1989) topology in an attempt to improve resolution of relationships within the clades identified by Baker et al. (1989).
Fig. 5 in Karyotype description and evidence of multiple sex chromosome system X X X X /X X Y in Potamotrygon aff. motoro and P. falkneri (Chondrichthyes: Potamotrygonidae) in the upper Paraná River basin, Brazil
Fig. 5. Karyotypes of female (a) and male (b) of Potamotrygon falkneri sample from Ilha Solteira, highlighting the sex chromosomes after conventional and the chromosomes marked by NOR. Scale bar = 10 m.
Fig. 6 in Karyotype description and evidence of multiple sex chromosome system X X X X /X X Y in Potamotrygon aff. motoro and P. falkneri (Chondrichthyes: Potamotrygonidae) in the upper Paraná River basin, Brazil
Fig. 6. Somatic metaphases of Potamotrygon aff. motoro, the population of Porto Rico (a), population of Ilha Solteira (b), identification of constitutive heterochromatin. Metaphases of Potamotrygon falkneri sample from Porto Rico (c) and Ilha Solteira (d), analysis of constitutive heterochromatin after C-banding technique.
Figure 8 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 8 - Distribution of Lethocerus patruelis (Stål, 1854) on Balkan Peninsula: ● published records; ♦ new records with data of breeding; ✹ new records of specimens attracted to light.
Figure 1 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 1 - Internal male reproductive system: t testis; v d vas deferens; v s vesicula seminalis d e ductus ejaculatorius.
Figure 2-7 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 2-7 - 2 Spermatogonial metaphases: two of larger chromosomes, X and Y, each show a subtelomeric unstained gap, representing the nucleolus organizing region (NOR) (arrow head) (routine staining) 3 Meiotic prophase:sex chromosomes are visible as a large, positively heteropycnotic and brightly fluorescent body (CMA3 staining) 4 Metaphase I (n = 13) (routine staining) 5 Metaphase I: GC-rich NORs located on both X and Y chromosomes (CMA3 staining) 6 After the first meiotic division all the chromosomes segregate to opposite poles (6a) resulting in two daughter MII cells (6b) with 13 elements each, 11A + m + X and 11A + m + Y, respectively (routine staining) 7 Metaphase I: DAPI staining did not reveal any differentiation along the length of the chromosomes. Bar = 10μm.
Figure 6 from: Giardini MC, Milla FH, Lanzavecchia S, Nieves M, Cladera JL (2015) Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 83-94. https://doi.org/10.3897/zookeys.540.6058
Figure 6 - Cytogenetic summary of sexual chromosome pair. Ideogram of sex chromosomes of Anastrepha fraterculus from Argentina (most frequent karyotype). Relative location of C-Bands, DAPI/CMA bands, 18S and anti-H3S28ph hybridization signals.
Figure 4 from: Giardini MC, Milla FH, Lanzavecchia S, Nieves M, Cladera JL (2015) Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 83-94. https://doi.org/10.3897/zookeys.540.6058
Figure 4 - Immunodetection analysis with H3S28ph antibody. Mitotic chromosome preparations of male (A, B, C) and female (D, E, F) individuals from Anastrepha fraterculus A, D DAPI stain B, E anti-H3S28ph hybridization signal C, F Merged images. Arrow heads indicate sex chromosome position.
Figure 1 from: Giardini MC, Milla FH, Lanzavecchia S, Nieves M, Cladera JL (2015) Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 83-94. https://doi.org/10.3897/zookeys.540.6058
Figure 1 - C-Band Ideogram. Sex chromosomes configurations of Anastrepha fraterculus found in Argentina (redrawn from Basso 2003). * Position of centromeres in each chromosome.
Figure 3 from: Giardini MC, Milla FH, Lanzavecchia S, Nieves M, Cladera JL (2015) Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 83-94. https://doi.org/10.3897/zookeys.540.6058
Figure 3 - 18S rDNA FISH analysis. Mitotic chromosome preparations from third instar larvae of Anastrepha fraterculus male. A DAPI stain B rDNA hybridization signal (autologous probe) C Merged images.
Figure 2 from: Giardini MC, Milla FH, Lanzavecchia S, Nieves M, Cladera JL (2015) Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 83-94. https://doi.org/10.3897/zookeys.540.6058
Figure 2 - The most frequent karyotype of Anastrepha fraterculus found in Argentina. Mitotic chromosome preparations from third instar larvae of Anastrepha fraterculus male. A C-Bands B DAPI stain C CMA stain D Merged DAPI/CMA images.
Figure 5 from: Giardini MC, Milla FH, Lanzavecchia S, Nieves M, Cladera JL (2015) Sex chromosomes in mitotic and polytene tissues of Anastrepha fraterculus (Diptera, Tephritidae) from Argentina: a review. In: De Meyer M, Clarke AR, Vera MT, Hendrichs J (Eds) Resolution of Cryptic Species Complexes of Tephritid Pests to Enhance SIT Application and Facilitate International Trade. ZooKeys 540: 83-94. https://doi.org/10.3897/zookeys.540.6058
Figure 5 - 18S rDNA FISH analysis in polytene and mitotic tissues. Polytene and mitotic chromosome preparations obtained from third instar larvae of male (A) and female (B) of Anastrepha fraterculus. In each case: 1 Polytene chromosomes DAPI stain 2 Polytene chromosomes 18S rDNA hybridization signa (FISH) 3 Polytene chromosomes merged image (DAPI/FISH) 4 Mitotic chromosomes DAPI stain 5 Mitotic chromosomes 18S rDNA hybridization signal (FISH) 6 Mitotic chromosomes merged image (DAPI/FISH).
Data from: Introgression maintains the genetic integrity of the sex-determining chromosome of the fungus Neurospora tetrasperma
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Data from: The evolution of sex determination associated with a chromosomal inversion
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Data from: The balanced-lethal system of crested newts: a ghost of sex chromosomes past?
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Data from: Sex chromosome turnover contributes to genomic divergence between incipient stickleback species
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Sex chromosome differentiation via changes in the Y chromosome repeat landscape in African annual killifishes Nothobranchius furzeri and N. kadleci
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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