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Miura I, Shams F, Ohki J, Tagami M, Fujita H, Kuwana C, Nanba C, Matsuo T, Ogata M, Mawaribuchi S, Shimizu N, Ezaz T. Multiple Transitions between Y Chromosome and Autosome in Tago's Brown Frog Species Complex. Genes (Basel) 2024; 15:300. [PMID: 38540359 PMCID: PMC10969965 DOI: 10.3390/genes15030300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/21/2024] [Accepted: 02/23/2024] [Indexed: 06/14/2024] Open
Abstract
Sex chromosome turnover is the transition between sex chromosomes and autosomes. Although many cases have been reported in poikilothermic vertebrates, their evolutionary causes and genetic mechanisms remain unclear. In this study, we report multiple transitions between the Y chromosome and autosome in the Japanese Tago's brown frog complex. Using chromosome banding and molecular analyses (sex-linked and autosomal single nucleotide polymorphisms, SNPs, from the nuclear genome), we investigated the frogs of geographic populations ranging from northern to southern Japan of two species, Rana tagoi and Rana sakuraii (2n = 26). Particularly, the Chiba populations of East Japan and Akita populations of North Japan in R. tagoi have been, for the first time, investigated here. As a result, we identified three different sex chromosomes, namely chromosomes 3, 7, and 13, in the populations of the two species. Furthermore, we found that the transition between the Y chromosome (chromosome 7) and autosome was repeated through hybridization between two or three different populations belonging to the two species, followed by restricted chromosome introgression. These dynamic sex chromosome turnovers represent the first such findings in vertebrates and imply that speciation associated with inter- or intraspecific hybridization plays an important role in sex chromosome turnover in frogs.
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Affiliation(s)
- Ikuo Miura
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima 739-8526, Japan; (C.K.); (C.N.)
- Institute for Applied Ecology, Centre for Conservation Ecology and Genomics, Faculty of Science and Technology, University of Canberra, Canberra, ACT 2617, Australia; (F.S.); (T.E.)
| | - Foyez Shams
- Institute for Applied Ecology, Centre for Conservation Ecology and Genomics, Faculty of Science and Technology, University of Canberra, Canberra, ACT 2617, Australia; (F.S.); (T.E.)
| | - Jun’ichi Ohki
- Natural History Museum and Institute, Chiba 260-8682, Japan;
| | - Masataka Tagami
- Gifu World Freshwater Aquarium, Kakamigahara, Gifu 501-6021, Japan;
| | - Hiroyuki Fujita
- Saitama Museum of Rivers, Yorii-Machi, Oosato-Gun, Saitama 369-1217, Japan;
| | - Chiao Kuwana
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima 739-8526, Japan; (C.K.); (C.N.)
| | - Chiyo Nanba
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima 739-8526, Japan; (C.K.); (C.N.)
| | - Takanori Matsuo
- Department of Preschool Education, Nagasaki Women’s Junior College, Nagasaki 850-0823, Japan;
| | - Mitsuaki Ogata
- Preservation and Research Center, City of Yokohama, Yokohama 241-0804, Japan;
| | - Shuuji Mawaribuchi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan;
| | - Norio Shimizu
- Hiroshima University Museum, Higashi-Hiroshima 739-8524, Japan;
| | - Tariq Ezaz
- Institute for Applied Ecology, Centre for Conservation Ecology and Genomics, Faculty of Science and Technology, University of Canberra, Canberra, ACT 2617, Australia; (F.S.); (T.E.)
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2
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Miura I, Shams F, Jeffries DL, Katsura Y, Mawaribuchi S, Perrin N, Ito M, Ogata M, Ezaz T. Identification of ancestral sex chromosomes in the frog Glandirana rugosa bearing XX-XY and ZZ-ZW sex-determining systems. Mol Ecol 2022; 31:3859-3870. [PMID: 35691011 DOI: 10.1111/mec.16551] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/03/2022] [Accepted: 05/24/2022] [Indexed: 11/30/2022]
Abstract
Sex chromosomes constantly exist in a dynamic state of evolution: rapid turnover and change of heterogametic sex during homomorphic state, and often stepping out to a heteromorphic state followed by chromosomal decaying. However, the forces driving these different trajectories of sex chromosome evolution are still unclear. The Japanese frog Glandirana rugosa is one taxon well suited to the study on these driving forces. The species has two different heteromorphic sex chromosome systems, XX-XY and ZZ-ZW, which are separated in different geographic populations. Both XX-XY and ZZ-ZW sex chromosomes are represented by chromosome 7 (2n = 26). Phylogenetically, these two systems arose via hybridization between two ancestral lineages of West Japan and East Japan populations, of which sex chromosomes are homomorphic in both sexes and to date have not yet been identified. Identification of the sex chromosomes will give us important insight into the mechanisms of sex chromosome evolution in this species. Here, we used a high-throughput genomic approach to identify the homomorphic XX-XY sex chromosomes in both ancestral populations. Sex-linked DNA markers of West Japan were aligned to chromosome 1, whereas those of East Japan were aligned to chromosome 3. These results reveal that at least two turnovers across three different sex chromosomes 1, 3 and 7 occurred during evolution of this species. This finding raises the possibility that cohabitation of the two different sex chromosomes from ancestral lineages induced turnover to another new one in their hybrids, involving transition of heterogametic sex and evolution from homomorphy to heteromorphy.
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Affiliation(s)
- Ikuo Miura
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima, Japan.,Institute for Applied Ecology, University of Canberra, Canberra, Australian Capital Territory, Australia
| | - Foyez Shams
- Institute for Applied Ecology, University of Canberra, Canberra, Australian Capital Territory, Australia
| | - Daniel Lee Jeffries
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Yukako Katsura
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | - Shuuji Mawaribuchi
- Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Nicolas Perrin
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Michihiko Ito
- School of Science, Kitasato University, Sagamihara, Japan
| | - Mitsuaki Ogata
- Preservation and Research Center, City of Yokohama, Yokohama, Japan
| | - Tariq Ezaz
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima, Japan.,Institute for Applied Ecology, University of Canberra, Canberra, Australian Capital Territory, Australia
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Perrin N. Sex-chromosome evolution in frogs: what role for sex-antagonistic genes? Philos Trans R Soc Lond B Biol Sci 2021; 376:20200094. [PMID: 34247502 PMCID: PMC8273499 DOI: 10.1098/rstb.2020.0094] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2020] [Indexed: 02/07/2023] Open
Abstract
Sex-antagonistic (SA) genes are widely considered to be crucial players in the evolution of sex chromosomes, being instrumental in the arrest of recombination and degeneration of Y chromosomes, as well as important drivers of sex-chromosome turnovers. To test such claims, one needs to focus on systems at the early stages of differentiation, ideally with a high turnover rate. Here, I review recent work on two families of amphibians, Ranidae (true frogs) and Hylidae (tree frogs), to show that results gathered so far from these groups provide no support for a significant role of SA genes in the evolutionary dynamics of their sex chromosomes. The findings support instead a central role for neutral processes and deleterious mutations. This article is part of the theme issue 'Challenging the paradigm in sex chromosome evolution: empirical and theoretical insights with a focus on vertebrates (Part I)'.
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Affiliation(s)
- Nicolas Perrin
- Department of Ecology and Evolution, University of Lausanne, 1015 Lausanne, Switzerland
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Kuwana C, Fujita H, Tagami M, Matsuo T, Miura I. Evolution of Sex Chromosome Heteromorphy in Geographic Populations of the Japanese Tago's Brown Frog Complex. Cytogenet Genome Res 2021; 161:23-31. [PMID: 33735859 DOI: 10.1159/000512964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 05/13/2020] [Indexed: 11/19/2022] Open
Abstract
The sex chromosomes of most anuran amphibians are characterized by homomorphy in both sexes, and evolution to heteromorphy rarely occurs at the species or geographic population level. Here, we report sex chromosome heteromorphy in geographic populations of the Japanese Tago's brown frog complex (2n = 26), comprising Rana sakuraii and R. tagoi. The sex chromosomes of R. sakuraii from the populations in western Japan were homomorphic in both sexes, whereas chromosome 7 from the populations in eastern Japan were heteromorphic in males. Chromosome 7 of R. tagoi, which is distributed close to R. sakuraii in eastern Japan, was highly similar in morphology to the Y chromosome of R. sakuraii. Based on this and on mitochondrial gene sequence analysis, we hypothesize that in the R. sakuraii populations from eastern Japan the XY heteromorphic sex chromosome system was established by the introduction of chromosome 7 from R. tagoi via interspecies hybridization. In contrast, chromosome 13 of R. tagoi from the 2 large islands in western Japan, Shikoku and Kyushu, showed a heteromorphic pattern of constitutive heterochromatin distribution in males, while this pattern was homomorphic in females. Our study reveals that sex chromosome heteromorphy evolved independently at the geographic lineage level in this species complex.
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Affiliation(s)
- Chiao Kuwana
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Hiroyuki Fujita
- Saitama Museum of Rivers, Yorii-Machi, Oosato-Gun, Saitama, Japan
| | | | | | - Ikuo Miura
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima, Japan,
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Toups MA, Rodrigues N, Perrin N, Kirkpatrick M. A reciprocal translocation radically reshapes sex-linked inheritance in the common frog. Mol Ecol 2019; 28:1877-1889. [PMID: 30576024 DOI: 10.1111/mec.14990] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 12/04/2018] [Accepted: 12/04/2018] [Indexed: 12/22/2022]
Abstract
X and Y chromosomes can diverge when rearrangements block recombination between them. Here we present the first genomic view of a reciprocal translocation that causes two physically unconnected pairs of chromosomes to be coinherited as sex chromosomes. In a population of the common frog (Rana temporaria), both pairs of X and Y chromosomes show extensive sequence differentiation, but not degeneration of the Y chromosomes. A new method based on gene trees shows both chromosomes are sex-linked. Furthermore, the gene trees from the two Y chromosomes have identical topologies, showing they have been coinherited since the reciprocal translocation occurred. Reciprocal translocations can thus reshape sex linkage on a much greater scale compared with inversions, the type of rearrangement that is much better known in sex chromosome evolution, and they can greatly amplify the power of sexually antagonistic selection to drive genomic rearrangement. Two more populations show evidence of other rearrangements, suggesting that this species has unprecedented structural polymorphism in its sex chromosomes.
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Affiliation(s)
- Melissa A Toups
- Department of Integrative Biology, University of Texas, Austin, Texas.,Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Nicolas Rodrigues
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Nicolas Perrin
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Mark Kirkpatrick
- Department of Integrative Biology, University of Texas, Austin, Texas
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Eto K, Matsui M, Kokuryo Y. A Note on Natural Triploidy in a Japanese Brown Frog,Rana neba(Anura; Ranidae). CURRENT HERPETOLOGY 2016. [DOI: 10.5358/hsj.35.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rodrigues N, Vuille Y, Brelsford A, Merilä J, Perrin N. The genetic contribution to sex determination and number of sex chromosomes vary among populations of common frogs (Rana temporaria). Heredity (Edinb) 2016; 117:25-32. [PMID: 27071845 DOI: 10.1038/hdy.2016.22] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 01/18/2023] Open
Abstract
The patterns of sex determination and sex differentiation have been shown to differ among geographic populations of common frogs. Notably, the association between phenotypic sex and linkage group 2 (LG2) has been found to be perfect in a northern Swedish population, but weak and variable among families in a southern one. By analyzing these populations with markers from other linkage groups, we bring two new insights: (1) the variance in phenotypic sex not accounted for by LG2 in the southern population could not be assigned to genetic factors on other linkage groups, suggesting an epigenetic component to sex determination; (2) a second linkage group (LG7) was found to co-segregate with sex and LG2 in the northern population. Given the very short timeframe since post-glacial colonization (in the order of 1000 generations) and its seemingly localized distribution, this neo-sex chromosome system might be the youngest one described so far. It does not result from a fusion, but more likely from a reciprocal translocation between the original Y chromosome (LG2) and an autosome (LG7), causing their co-segregation during male meiosis. By generating a strict linkage between several important genes from the sex-determination cascade (Dmrt1, Amh and Amhr2), this neo-sex chromosome possibly contributes to the 'differentiated sex race' syndrome (strictly genetic sex determination and early gonadal development) that characterizes this northern population.
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Affiliation(s)
- N Rodrigues
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Y Vuille
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - A Brelsford
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - J Merilä
- Ecological Genetics Research Unit, Department of Biosciences, University of Helsinki, Helsinki, Finland
| | - N Perrin
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
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Barske LA, Capel B. Blurring the edges in vertebrate sex determination. Curr Opin Genet Dev 2009; 18:499-505. [PMID: 19152784 DOI: 10.1016/j.gde.2008.11.004] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2008] [Revised: 11/13/2008] [Accepted: 11/18/2008] [Indexed: 11/28/2022]
Abstract
Sex in vertebrates is determined by genetically or environmentally based signals. These signals initiate molecular cascades and cell-cell interactions within the gonad that lead to the adoption of the male or female fate. Previously, genetically and environmentally based mechanisms were thought to be distinct, but this idea is fading as a result of the unexpected discovery of coincident genetic and thermal influences within single species. Together with accumulating phylogenetic evidence of frequent transitions between sex-determining mechanisms, these findings suggest that genetic and environmental sex determination actually represent points on a continuum rather than discrete categories, and that populations may shift in one direction or the other in response to mutations or changing ecological conditions. Elucidation of the underlying molecular basis of sex determination in mice has yielded a bistable model of mutually antagonistic signaling pathways and feedback regulatory loops. This system would be highly responsive to changes in the upstream primary signal and may provide a basis for the rapid evolution of and transitions between different methods of sex determination.
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Affiliation(s)
- Lindsey A Barske
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA
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Miura I. An Evolutionary Witness: the Frog Rana rugosa Underwent Change of Heterogametic Sex from XY Male to ZW Female. Sex Dev 2008; 1:323-31. [DOI: 10.1159/000111764] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2007] [Accepted: 09/19/2007] [Indexed: 11/19/2022] Open
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10
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Ryuzaki M, Nishioka M, Kawamura T. Karyotypes of Rana tagoi Okada with diploid number 28 in the Chausu Mountains of the Minamishinshu district of Nagano Prefecture, Japan (Anura: Ranidae). Cytogenet Genome Res 2006; 114:56-65. [PMID: 16717451 DOI: 10.1159/000091929] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Accepted: 07/08/2005] [Indexed: 11/19/2022] Open
Abstract
Karyotypes of Tago's brown frog Rana tagoi from the Chausu mountains in Minamishinshu of Nagano Prefecture were examined by conventional Giemsa staining, C-banding and late replication (LR)-banding. Chromosome number was 2n = 28 in all cases. The 28 chromosomes consisted of four pairs (1-4) of large biarmed chromosomes, two pairs (5-6) of telocentric chromosomes and eight pairs (7-14) of small biarmed chromosomes. Chromosome pair 11 had a secondary constriction on the long arm. In females, the C-band on the long arm of chromosome pair 6 was detected in both homologs, but was absent from the arms of the homologs of chromosome pairs 5 and 9. In males, C-bands were found in the long arms of both homologs of chromosome pairs 5 and 6, were present only in one homolog of chromosome pair 5 for certain male specimens and found in only one homolog of chromosome pair 9. Specimens of R. tagoi (2n = 28) should thus have two pairs of telocentric chromosomes to provide the same number of chromosome arms, these originating quite likely from chromosome pair 1 in the 26-chromosome specimens by centric fission. Heteromorphic sex chromosomes of the XX-XY type in R. tagoi (2n = 28) in the Chausu mountains were identified. Karyotypes of tail-tip cells from a hybrid tadpole between female R. tagoi (2n = 26) from the Hinohara village in Tokyo and male R. tagoi (2n = 28) from the Chausu mountain population were examined by squash preparation. Chromosome number was 2n = 27 in all tadpoles. The 27 chromosomes consisted of one chromosome set of R. tagoi (2n = 28) and one of R. tagoi (2n = 26).
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Affiliation(s)
- M Ryuzaki
- Department of Biology, Kitasato University School of Medicine, Sagamihara, Japan.
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11
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Hanada H. G and C banding show structural differences between the Z and W chromosomes in the frog Buergeria buergeri. Hereditas 2002; 136:151-4. [PMID: 12369101 DOI: 10.1034/j.1601-5223.2002.1360210.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
G and C banding studies were made on cultured blood cells of matured male and female Buergeria (B.) buergeri frogs. The Z is subtelocentric and the W is submetacentric. There is a satellite near the end of the long arm of the Z. Constitutive heterochromatin is seen near the proximal and distal portions of the long arms of both Z and W. A single heavily stained G band is seen in the short arm of Z, while one or two heavily stained G bands are observed in the short arm of W. The Z may have originated through a process, in the course of which parts of W have been translocated to Z.
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Affiliation(s)
- Hideki Hanada
- Laboratory for Amphibian Biology, Graduate School of Science, Hiroshima University, Higashihiroshima, 739-8526, Japan.
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Pigozzi MI, Solari AJ. The ZW pairs of two paleognath birds from two orders show transitional stages of sex chromosome differentiation. Chromosome Res 1999; 7:541-51. [PMID: 10598569 DOI: 10.1023/a:1009241528994] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Pachytene oocytes from the two presumably most primitive orders (Paleognathae) among living birds were used to study the pairing behaviour and location of recombination nodules (RNs) in the sex pair. In the ratite Pterocnemia pennata (Rheiformes), the 42 analyzed ZW pairs show an average of 2.2 RNs distributed along 80% of the synaptonemal complex (SC) that covers the long arm of the acrocentric Z and W chromosomes in this homomorphic sex pair. In the tinamid Rynchotus rufescens (Tinamiformes), the 60 analyzed ZW pairs show an average of 1.35 RNs distributed along 66% of the SC covering most of the long arms of this visibly heteromorphic ZW pair. RNs are non-randomly distributed and show interference in both species, but in the tinamou they are restricted to a significantly smaller stretch. The discovery of an intermediate degree in the restriction of RN location, between the extremes of free recombination along most of the W in ratites and strict localization of a single RN in Neognath birds, suggests its relationship with the mechanism of sex chromosome differentiation among Aves.
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Affiliation(s)
- M I Pigozzi
- Centro de Investigaciones en Reproduccion, Facultad de Medicina, Buenos Aires, Argentina
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