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16 results for “karyotypic variation”
FIGURE 1. Snake chromosomes. A in Karyotypes of Coralsnakes (Reptilia: Elapidae) from the Western Hemisphere, with Comments on Intraspecific Variation and Centric Fission of Chromosomes
FIGURE 1. Snake chromosomes. A. Karyotype of Micruroides euryxanthus (2n = 34, with 14 macrochromosomes and 20 microchromosomes), AMNH R-109413, male. B. Karyotype of Micrurus tener (2n = 32 in males, 33 in females, with 16 macrochromosomes and 16 microchromosomes in males, 17 microchromosomes in females), AMNH R-110075, female illustrated with ZW1W2 sex chromosome heteromorphism. Scale bar = 10 µm.
Fig. 4 in Variation in the Karyotype, Cytochrome b Gene, and 5S rDNA of Four Thunnus (Perciformes, Scombridae) Tunas
Fig. 4. (a) Neighbor-joining and (b) Maximum-likelihood trees constructed using 5S ribosomal DNA sequences from 4 Thunnus species and the outgroup, Scomber scombrus. NBT: T. orientalis, YFT: T. albacares, BET: T. obesus, LFT: T. alalunga. ◎indicates two subgroups of T. obesus.
Fig. 3 in Variation in the Karyotype, Cytochrome b Gene, and 5S rDNA of Four Thunnus (Perciformes, Scombridae) Tunas
Fig. 3. (a) Neighbor-joining and (b) Maximum-likelihood trees constructed with 17 cytochrome (Cyt) b gene sequences from 8 Thunnus species and the outgroup, Katsuwonus pelamis. NBT: T. orientalis, YFT: T. albacares, BET: T. obesus, LFT: T. alalunga.
Fig. 1 in Variation in the Karyotype, Cytochrome b Gene, and 5S rDNA of Four Thunnus (Perciformes, Scombridae) Tunas
Fig. 1. Sampling locations (ellipse) of Thunnus obesus, T. albacares, T. alalunga, and T. orientalis in Taiwanese waters.
FIGURE 5 in C-heterochromatin variation in the karyotype reflects species level distinction between Erinaceus roumanicus and E. concolor (Eulipotyphla: Erinaceidae) in Turkey
FIGURE 5. NORs distribution in karyotypes of Turkish hedgehogs. A, female of E. concolor from Sinop in northern Anatolia; B, male of E. concolor from Konya and Antalya in central and southern Anatolia; C. male of E. roumanicus from Edirne in Thrace.
FIGURE 4. C in C-heterochromatin variation in the karyotype reflects species level distinction between Erinaceus roumanicus and E. concolor (Eulipotyphla: Erinaceidae) in Turkey
FIGURE 4. C-banded karyotypes of Turkish hedgehogs. A, male of Erinaceus concolor from Konya in central Anatolia; B, male of E. roumanicus from Edirne in Thrace.
FIGURE 1 in C-heterochromatin variation in the karyotype reflects species level distinction between Erinaceus roumanicus and E. concolor (Eulipotyphla: Erinaceidae) in Turkey
FIGURE 1. Collecting localities. () 1. Sinop, 2. Trabzon (north-eastern Turkey – northern Anatolia); () 3, K₁r₁kkale, 4. Konya, 5. Antalya, 6. Gaziantep, 7. Şanl₁urfa (central and southern Anatolia); () 8. Edirne, 9. Tekirdaǧ (European Turkey –Thrace).
Data from: Karyotype and genome size variation in genus Ajuga L. (Ajugoideae–Lamiaceae)
Chromosome number changes and karyotype evolution play an important role in plant genome diversification and eventually in speciation. The genus Ajuga L. (Lamiaceae) has approximately 50 species distributed in temperate to subtropical regions. Four of these species are currently recognized in Korea (A. decumbens Thunb., A. multiflora Bunge, A. nipponensis Makino and A. spectabilis Nakai). Understanding the karyotype evolution in Ajuga has been hampered by the small size of their chromosomes and symmetrical karyotypes. Here we used classic Feulgen staining to establish chromosome numbers and construct karyotypes of the four species of Ajuga recognized in Korea and flow cytometry was used to study their variation in genome. The chromosome number of all investigated plants was 2n = 32. Still, the 2C DNA content ranged from 2.18 pg (A. decumbens) to 4.53 pg (A. multiflora). While the chromosome numbers were the same for all investigated species, the genome size variation could potentially be used as a taxonomic marker.
Figure 3 from: Mitrenina EY, Erst AS, Peruzzi L, Skaptsov MV, Ikeda H, Nikulin VY, Wang W (2021) Karyotype and genome size variation in white-flowered Eranthis sect. Shibateranthis (Ranunculaceae). PhytoKeys 187: 207-227. https://doi.org/10.3897/phytokeys.187.75715
Figure 3 Haploid idiograms of white-flowered Eranthis sect. Shibateranthis species. I–VIII – chromosome pairs; m – metacentric chromosome; sm – submetacentric chromosome; st – subtelocentric chromosome; t – acrocentric chromosome; T – telocentric chromosome; B – B chromosome.
Figure 2 from: Mitrenina EY, Erst AS, Peruzzi L, Skaptsov MV, Ikeda H, Nikulin VY, Wang W (2021) Karyotype and genome size variation in white-flowered Eranthis sect. Shibateranthis (Ranunculaceae). PhytoKeys 187: 207-227. https://doi.org/10.3897/phytokeys.187.75715
Figure 2 Mitotic metaphase plates of white-flowered Eranthis sect. ShibateranthisAE. lobulata, 2n = 16 BE. stellata (pop. 2), 2n = 16 CE. stellata (pop. 6), 2n = 16 DE. tanhoensis (pop. 12), 2n = 14 EE. tanhoensis (pop. 10), 2n = 14+0–8B (arrows point at B chromosomes) FE. sibirica (pop. 15), 2n = 42 GE. byunsanensis, 2n = 16 (arrows point at the heteromorphic chromosome pair) HE. pinnatifida (pop. 21), 2n = 16 IE. pinnatifida (pop. 20), 2n = 16 (arrows point at heteromorphic chromosome pair). Scale bars: 10 μm. Microphotographs by E.Yu. Mitrenina.
Figure 1 from: Mitrenina EY, Erst AS, Peruzzi L, Skaptsov MV, Ikeda H, Nikulin VY, Wang W (2021) Karyotype and genome size variation in white-flowered Eranthis sect. Shibateranthis (Ranunculaceae). PhytoKeys 187: 207-227. https://doi.org/10.3897/phytokeys.187.75715
Figure 1 The studied species of white-flowered Eranthis sect. ShibateranthisAE. stellata (photo by V.V. Yakubov) BE. sibirica (photo by A.S. Erst); CE. tanhoensis (photo by A.S. Erst) DE. lobulata (photo by K.-L. Xiang) EE. pinnatifida (photo by A.S. Erst) FE. byunsanensis (photo by H.J. Choi).
Figure 4 from: Mitrenina EY, Erst AS, Peruzzi L, Skaptsov MV, Ikeda H, Nikulin VY, Wang W (2021) Karyotype and genome size variation in white-flowered Eranthis sect. Shibateranthis (Ranunculaceae). PhytoKeys 187: 207-227. https://doi.org/10.3897/phytokeys.187.75715
Figure 4 PCoA (Coordinate 1, 65.31% of variance explained vs. Coordinate 2, 16% of variance explained) based on six karyological parameters of white-flowered Eranthis sect. Shibateranthis species.
Fig. 2 in Variation in the Karyotype, Cytochrome b Gene, and 5S rDNA of Four Thunnus (Perciformes, Scombridae) Tunas
Fig. 2. Karyotypes of (a) Thunnus obesus, (b) T. albacares, (c) T. alalunga, and (d) T. orientalis.
FIGURE 3. G in C-heterochromatin variation in the karyotype reflects species level distinction between Erinaceus roumanicus and E. concolor (Eulipotyphla: Erinaceidae) in Turkey
FIGURE 3. G-banded karyotype of Erinaceus concolor (female from Konya in central Anatolia).
FIGURE 2 in C-heterochromatin variation in the karyotype reflects species level distinction between Erinaceus roumanicus and E. concolor (Eulipotyphla: Erinaceidae) in Turkey
FIGURE 2. Conventional karyotype of Erinaceus roumanicus (male from Edirne in Thrace).
Data from: Karyotype and genome size variation in genus Ajuga L. (Ajugoideae–Lamiaceae)
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