TAILIEUCHUNG - báo cáo khoa học: "Centre National de Recherches segregation in gynogenetic brown trout (Salmo trutta L.): systematically high frequencies of post-reduction"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Centre National de Recherches segregation in gynogenetic brown trout (Salmo trutta L.): systematically high frequencies of post-reduction | Génét. Sél. Evol. 1986 18 4 385-392 Gene segregation in gynogenetic brown trout Salmo trutta L. systematically high frequencies of post-reduction R. GUYOMARD . Laboratoire de Génệtique des Poissons Centre National de Recherches Zootechniques F 78350 Jouy-en-Josas Summary The post-reduction rates of 12 protein loci were measured in gynogenetic lines of brown trout obtained by retention of the second polar body. Post-reduction occurs frequently at all the loci average rate and is systematic at 7 of them. Similar results were previously observed in rainbow trout and complete interference could be a common feature in salmonids. The relationship between the degree of divergence of the duplicated loci and their recombination rate is also examined and discussed. Key words Protein loci post-reduction gynogenesis Salmo trutta L. Resume Segregation génique dans des lignées gỵnogénétiques de truite fario Salmo trutta L. frequences de post-réduction systématiquement élevées Les taux de post-réduction de 12 locus enzymatiques ont été estimés dans des lignées gynogénétiques de truite fario obtenues par rétention du 2 globule polaire. La post-réduction se produit frequemment à tous les locus taux moyen 0 88 0 16 et systematiquement à 7 d entre eux. Des resultats similaires ont déjà été obtenus chez la truite arc-en-ciel 1 interíérence totale pourrait done être une caractéristiqũe commune à tous les salmonidés. La relation entre le degré de divergence des locus dupliqués et leur taux de recombinaison est également examinée et discutée. Mots clés Polymorphisme enzymatique post-réduction gynogénèse Salmo trutta L. I. Introduction Gynogenesis is the development of an egg triggered by a genetically inactivated spermatozoa. The induction of diploid gynogenesis in vertebrates review by Chour-ROUT 1982 results in inbreeding and original sex ratios all-female progenies in female 386 R. GUYOMARD homogametic species . The artificial induction of viable gynogenetics is .

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