Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: A molecular recombination map of Antirrhinum majus | BMC Plant Biology A molecular recombination map of Antirrhinum majus Schwarz-Sommer et al. Schwarz-Sommer et al. BMC Plant Biology 2010 10 275 http 1471-2229 10 275 15 December 2010 BioMed Central Schwarz-Sommer et al. BMC Plant Biology 2010 10 275 http 1471-2229 10 275 BMC Plant Biology RESEARCH ARTICLE Open Access A molecular recombination map of Antirrhinum majus 7f l I rr n I c r In t A n r 7 c r m m nr f ACi I In I 72 11 I I I n A Z n I r r 3 D n r I n CL. r w r r -Il h A n rrr 3 I I I r I n m n o I m n I m Dn n I rm 4 zsuzsanna scnwarz-sommer Thomas GUbitz Julia Weiss Perla Gomez-di-Marco Luciana uelgado-Benarrocn Andrew Hudson5 Marcos Egea-Cortines3 Abstract Background Genetic recombination maps provide important frameworks for comparative genomics identifying gene functions assembling genome sequences and for breeding. The molecular recombination map currently available for the model eudicot Antirrhinum majus is the result of a cross with Antirrhinum molle limiting its usefulness within A. majus. Results We created a molecular linkage map of A. majus based on segregation of markers in the F2 population of two inbred lab strains of A. majus. The resulting map consisted of over 300 markers in eight linkage groups which could be aligned with a classical recombination map and the A. majus karyotype. The distribution of recombination frequencies and distorted transmission of parental alleles differed from those of a previous inter-species hybrid. The differences varied in magnitude and direction between chromosomes suggesting that they had multiple causes. The map which covered an estimated of 95 of the genome with an average interval of 2 cM was used to analyze the distribution of a newly discovered family of MITE transposons and tested for its utility in positioning seven mutations that affect aspects of plant size. Conclusions The current map has an estimated interval of Mb between markers. It shows a lower .
