A possible cause of non-disjunction of additional chromosome 21 in Down syndrome Ram S. VermaArvind BabuHarvey Dosik OriginalPaper Pages: 339 - 341
Somatic hybridization of Nicotiana tabacum and Petunia hybrida Deepak PentalJohn D. HamillEdward C. Cocking OriginalPaper Pages: 342 - 347
High frequency conjugal transfer of tylosin genes and amplifiable DNA in Streptomyces fradiae Jill StonesiferPatti MatsushimaRichard H. Baltz OriginalPaper Pages: 348 - 355
The two megaplasmids of Rhizobium meliloti are involved in the effective nodulation of alfalfa Michael F. HynesReinhard SimonAlfred Pühler OriginalPaper Pages: 356 - 362
Identification of T4 gene 25 product, a component of the tail baseplate, as a 15K lysozyme Boguslaw SzewczykKrystyna Bienkowska-SzewczykLloyd M. Kozloff OriginalPaper Pages: 363 - 367
Organ-specific gene expression in potato: Isolation and characterization of tuber-specific cDNA sequences S. RosahlP. EckesL. Willmitzer OriginalPaper Pages: 368 - 373
Expression of maize zein genes in transformed sunflower cells Peter B. GoldsbroughStanton B. GelvinBrian A. Larkins OriginalPaper Pages: 374 - 381
Mitotic crossing over in chromosome I disomics of Aspergillus nidulans S. J. AssinderB. GiddingsA. Upshall OriginalPaper Pages: 382 - 387
Multiple transformation of plant cells by Agrobacterium may be responsible for the complex organization of T-DNA in crown gall and hairy root Annik PetitAndré BerkaloffJacques Tempé OriginalPaper Pages: 388 - 393
Mitotic recombination between dispersed but related rRNA genes of Schizosaccharomyces pombe generates a reciprocal translocation Philippe SzankasiChristof GyslerPeter Munz OriginalPaper Pages: 394 - 402
Isolation of a Tn501 insertion mutant lacking porin protein P of Pseudomonas aeruginosa Keith PooleRobert E. W. Hancock OriginalPaper Pages: 403 - 409
Evidence in a nematode for regulation of transposon excision by tissue-specific factors Scott W. EmmonsSusan RobertsKe-san Ruan OriginalPaper Pages: 410 - 415
The copy number of Bacillus plasmid pRBH1 is negatively controlled by RepB protein Takashi AnoTadayuki ImanakaShuichi Aiba OriginalPaper Pages: 416 - 420
In vivo homologous recombination intermediates of yeast mitochondrial DNA analyzed by electron microscopy Elissa P. SenaBernard RevetEthel Moustacchi OriginalPaper Pages: 421 - 428
Structure of the chalcone synthase gene of Antirrhinum majus Hans SommerHeinz Saedler OriginalPaper Pages: 429 - 434
Suppression of the Escherichia coli dnaA46 mutation by amplification of the groES and groEL genes Olivier FayerJean-Michel LouarnCosta Georgopoulos OriginalPaper Pages: 435 - 445
A DNA fragment containing the groE genes can suppress mutations in the Escherichia coli dnaA gene Andrew J. JenkinsJohn B. MarchMillicent Masters OriginalPaper Pages: 446 - 454
A molecular genetic approach to the functioning of the immunity protein to colicin A Vincent GeliDaniel BatyClaude Lazdunski OriginalPaper Pages: 455 - 460
Inhibition of bacterial segregation by early functions of phage Mu and association of replication protein B with the inner cell membrane Clemens BoeckhErnesto G. BadeJohn N. Reeve OriginalPaper Pages: 461 - 466
The α-glucosyltransferases of bacteriophages T2, T4 and T6 Hermann GramWolfgang Rüger OriginalPaper Pages: 467 - 470
Transient gene expression in a Gramineae cell line Wolfgang WerrHorst Lörz OriginalPaper Pages: 471 - 475
Electron microscopic localization of hydrogenase genes on the megaplasmid pHG 1 in Alcaligenes eutrophus Christine RohdeWalther JohannssenFrank Mayer OriginalPaper Pages: 476 - 480
Third chromosome suppressor of position-effect variegation loci in Drosophila melanogaster G. ReuterR. DornG. Rauh OriginalPaper Pages: 481 - 487
Physical and genetic structure of the glpD-malT interval of the Escherichia coli K-12 chromosome Herbert SchweizerGaye SweetTimothy J. Larson OriginalPaper Pages: 488 - 492
Organization of transcription units around the Drosophila melanogaster rudimentary locus and temporal pattern of expression J. M. RawlsJ. -N. FreundP. Schedl OriginalPaper Pages: 493 - 499
Direct evidence for autogenous regulation of the Escherichia coli genes rpoBC in vivo David W. MeekRichard S. Hayward OriginalPaper Pages: 500 - 508
Shadow promoters in the F plasmid transfer operon Tim FowlerRussell Thompson Short Communication Pages: 509 - 511
In Bradyrhizobium japonicum the common nodulation genes, nodABC, are linked to nifA and fixA Joseph W. LambHauke Hennecke Short Communication Pages: 512 - 517
Illegitimate recombination mediated by T4 DNA topoisomerase in vitro Hideo Ikeda Short Communication Pages: 518 - 520
