File:Xenopus laevis x tropicalis cybrids 01.png
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English: Characterization of the hybrids formed by the cross-fertilization of X. laevis eggs with X. tropicalis sperm. (A-C) lxt embryos are bona fide hybrids and synthesize proteins from the X. tropicalis genome. Stage 40 tadpoles of the following kinds are shown: (A) lxl, (B) albino (a) lxl (alxal) and (C) alxt. 22/22 stage 40 alxt tadpoles had a wild-type pigmentation pattern, indicating expression from the X. tropicalis albino gene. (D-E) Karyotype analysis revealed the expected chromosomal content in cells of lxt hybrids based on the respective haploid complement of each species (X. tropicalis: 10; X. laevis: 18). Hoechst-stained metaphase nuclei spreads from (D) [t]xt (10 chromosomes) and (E) lxt hybrid (28 chromosomes) stage 32 tadpoles are shown. Arrowheads point at the X. tropicalis marker chromosome 10 which is distinguishably smaller than all the other chromosomes present in each species. Individual chromosomes were manually highlighted in red. (F-H) lxt hybrids can metamorphose and develop into mature adults that have an intermediate phenotype relative to the two parental species. Adult (F) lxl, (G) lxt, and (H) txt males are shown. Scale bars in (A-C): 1 mm; (D-E): 2 mm. Diameter of the coin present in the background of (F-G): 2 cm; (G-H) are shown at the same magnification. |
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| Source |
Fig. S1 of Narbonne P, Simpson D, Gurdon J (2011). "Deficient Induction Response in a Xenopus Nucleocytoplasmic Hybrid". PLOS Biology. DOI:10.1371/journal.pbio.1001197. PMID 22131902. PMC: 3217020. |
| Author | Narbonne P, Simpson D, Gurdon J (2011) |
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