M.R. EL-HELW and A.M.M. ALI
VIABILITY OF DROSOPHILA MELANOGASTER ON MEDIA SUPPLEMENTED WITH DIFFERENT GENOTYPES OF SACCHAROMYCES CEREVISIAE [Abstract]
B. DJORDJEVIĆ, A. G. PEREZ and Marguerite K. WEILL
REPAIR OF RADIATION DAMAGE IN DIFFERENT SUBLINES OF HeLa CELLS [Abstract]
H.E EL-HATTAB and A.F. IBRAHIM
GENETIC DIVERSITY IN THE M9-PROGENY OF AN INDUCED BARLEY MUTATION. I. MORPHOLOGICAL AND PHYSIOLOGICAL CHARACTERS [Abstract]
Nada SAVKOVIĆ, Jugoslava PEČEVSKI and K. MALČIĆ
INDUCTION OF CHROMOSOMAL TRANSLOCATIONS IN THE SPERMATOGONIA OF WHOLE-BODY IRRADIATED MOUSE WITH A DOSE OF 500 R AND IN THEIR PROGENY [Abstract]
G.C. GORMAN, V. JOVANOVIĆ, E. NEVO and F.C. McCOLLUM
CONSERVATIVE KARYOTYPES AMONG LIZARDS OF THE GENUS LACERTA FROM THE ADRIATIC ISLANDS [Abstract]
R. HADŽISELIMOVIĆ
A NOTE ON THE FREQUENCY OF EAR LOBE TYPES IN THE HUMAN POPULATION OF SARAJEVO [Abstract]
A.M.M. ALI
GENETIC BACKGROUND EFFECTS ON SPONTANEOUS AND NITROUS ACID-INDUCED SCHIZOSACCHAROMYCES POMBE MUTANTS ISOLATED FOLLOWING INOSITOL STARVATION [Abstract]
D. MARINKOVIĆ, S. ŽIVKOVIĆ i M. MILOŠEVIĆ
POPULATION-GENETIC AND CYTOGENETIC STUDIES ON BALKAN NEPHROPATHY [Abstract]
A.M. ABO-HEGAZI and A. TAVČAR
USEFUL MUTATIONS INDUCED WITH GAMMA RAYS IN THE FIELD BEAN (VICIA FAB A MINOR) [Abstract]
I. KREFT
RELIABILITY OF DISTINGUISHING DICENTRIC CHROMATIDS FROM CHROMOSOME STICKINESS IN BARLEY MICROSPOROCYTES [Abstract]
V. R. GLIŠIN
SOME BIOCHEMICAL CHANGES DURING THE EARLY STAGES OF DEVELOPMENT OF SEA URCHIN EMBRYOS [Abstract]
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 113-117
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
VIABILITY OF DROSOPHILA MELANOGASTER ON MEDIA SUPPLEMENTED WITH DIFFERENT GENOTYPES OF SACCHAROMYCES CEREVISIAE
M.R. EL-HELW and A.M.M. ALI
National Research Centre, Genetics and Cytology Laboratory, Dokki, Cairo, U. A. R.
Abstract
El-Helw, M.R. and Ali A.M.M. (1970): Viability of Drosophila melanogaster on media supplemented with different genotypes of Saccharornyces cerevisiae. - Genetika, Vol. 2, No. 2, 113-117.
The larval viability of D. melanogaster was significantly different after cultivation in the presence of different yeast genotypes. Similarly amino acid supplementation of the media for cultivation produced a significant increase in larval viability. The interaction between yeast genotypes and histidine supplementation was not significant.
Both histidine supplementation and different yeast genotypes caused highly significant differences in the body-weight of the flies with a significant interaction between the two variables.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 119-130
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
REPAIR OF RADIATION DAMAGE IN DIFFERENT SUBLINES OF HeLa CELLS
B. DJORDJEVIĆ, A. G. PEREZ and Marguerite K. WEILL
Division of Biophysics, Sloan-Kettering Institute for Cancer Research New York, New York 10021
Abstract
Djordjeyić, B., Perez, A. G. and Weill, Marguerite (1970): Repair of radiation damage in different sublines of HeLa cells.- Genetika, Vol. 2, No. 2, 119-130.
Postirradiation treatment with 2•10-3 M thymidine more than doubles survival in a subline of HeLa S-3 cells irradiated with 500 rads of X-rays in the S phase. A 2-3 hour treatment period seems to be optimal for an increased survival. Postirradiation treatment of another subline of HeLa S-3 cells, which is naturally more radioresistant, has a smaller effect on survival. In the subline responsive to treatment with excess thymidine, pretreatment evoked a similar response as postirradia-tion treatment. It is concluded that additional modes exist whereby survival is increased besides through postponement of DNA synthesis in irradiated cells.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 131-140
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
GENETIC DIVERSITY IN THE M9-PROGENY OF AN INDUCED BARLEY MUTATION. I. MORPHOLOGICAL AND PHYSIOLOGICAL CHARACTERS
H.E EL-HATTAB and A.F. IBRAHIM
University of Cairo, Faculty of Agriculture, Department of Agronomy, Cairo, U.A.R.
Abstract
El-Hattab, H. E. and Ibrahim, A. F. (1970): Genetic diversity in the M,-progeny of an induced barley mutation. I. Morphological and physiological characters. - Genetika, Vol. 2, No. 2, 131-140.
The present studies were undertaken in order to define the nature and magnitude of the genetic variation of some morphological and physiological characters of 129 mutant lines. Great variability was observed in spike type, number of spikelet rows, spike length, number of rachis segments, spike density, sterility percentage, shedding of awns, and date of heading. The nature and magnitude of variation in these characters were discussed.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 141-147
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
INDUCTION OF CHROMOSOMAL TRANSLOCATIONS IN THE SPERMATOGONIA OF WHOLE-BODY IRRADIATED MOUSE WITH A DOSE OF 500 R AND IN THEIR PROGENY
Nada SAVKOVIĆ, Jugoslava PEČEVSKI and K. MALČIĆ
Department of Radiobiology »Boris Kidrič« Institute of Nuclear Sciences, Vinča, Beograd, Yugoslavia
Abstract
Savkovic Nada, Pecevski, Jugoslava and Malcic, K. (1970): Induction of chromosomal translocations in the spermatogonia of whole-boby irradiated mouse with a dose of 500 r and in their progeny. - Genetika, Vol. 2, No. 2, 141-147.
When male mice were wholly irradiated with a dose of 500 r X-rays and chromosomes in the first meiotic metaphase were examined 8 weeks later, the incidence of cells with translocations was 2.7%. From the total number of male offspring, 19% were aberrant, and the incidence of cells with translocations in these aberrant offspring was 84.5%.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 149-154
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
CONSERVATIVE KARYOTYPES AMONG LIZARDS OF THE GENUS LACERTA FROM THE ADRIATIC ISLANDS
G.C. GORMAN, V. JOVANOVIĆ, E. NEVO and F.C. McCOLLUM
Museum of Vertebrate Zoology, University of California, Berkeley, U.S.A.
Department of Zoology, Faculty of Science, Belgrade, Yugoslavia and Laboratory of Genetics, Hebrew University, Jerusalem, Israel
Abstract
Gorman, G.C., Jovanović, V., Nevo, E., and McCollum, F.C. (1970): Conservative karyolypes among lizards of the genus Lacerta from the, Adriatic Islands. - Genetika, Vol. 2, No. 2, 149-154.
Lizards belonging to the species Lacerta sicula, L. oxycerihala, and L. mellisellensis from numerous Adriatic Islands and from adjacent mainland populations show no variation in karyotype. All are characterized by the diploid number 2n - 3S consisting of 36 acrocentric macrochromosomes and 2 acroce trie microchromosomes.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 155-159
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
A NOTE ON THE FREQUENCY OF EAR LOBE TYPES IN THE HUMAN POPULATION OF SARAJEVO
R. HADŽISELIMOVIĆ
Prirodno-matematički fakultet, Sarajevo
Abstract
Hadziselimović, R. (1970): A note on the frequency of ear lobe types in the human population of Sarajevo.- Genetika, Vol. 2, No. 2, 155-159.
A population study of the types of ear lobe has shown the variability in two common types of this trait. It was found that the frequency of attached ear lobes in the observed sample was 32.80% (q = 0.57).
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 161-169
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
GENETIC BACKGROUND EFFECTS ON SPONTANEOUS AND NITROUS ACID-INDUCED SCHIZOSACCHAROMYCES POMBE MUTANTS ISOLATED FOLLOWING INOSITOL STARVATION
A.M.M. ALI
National Research Centre, Microbial Genetics Research Unit, Dokki, Cairo, U.A.R.
Abstract
Ali, A. M. M. (1970): Genetic background effects on spontaneous and nitrous acid-induced Schizosaccharomyces pombe mutants isolated following inositol starvation. - Genetika, Vol. 2, No. 2, 161-169.
Statistical analysis showed that in the two wild-type strains of Schizosaccharomyces pombe: 972h- and 975h+, the death rate after inositol starvation did not differ significantly (S. E. = 0.14; P>0.50).
Analysis of the mutants obtained from the two wild-types spontaneously or following treatment with two different concentrations of NaNO: showed significant differences in each case between the proportions of specific mutants obtained. Thus, the genetic background of each wild-type strain shows its effect through mutations.
The ability of a single cell to survive inositol starvation is either controlled by a large number of genes or by cytoplasmic factors which are correlated with the biochemical mutants. These genes or factors are distributed over the cells of the colony, which is obtained from this single cell, giving different percentages of cells which can survive nostitol starvation.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 171-184
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
POPULATION-GENETIC AND CYTOGENETIC STUDIES ON BALKAN NEPHROPATHY
D. MARINKOVIĆ, S. ŽIVKOVIĆ i M. MILOŠEVIĆ
Institut za biološka istraživanja, Beograd
i Zavod za zdravstvenu zaštitu SRS, Beograd
Abstract
Marinković, D., Živković, S. i Milošević, M. (1970): Population-genetic and cytogenetic studies on Balkan nephropathy. - Genetika, Vol. 2, No. 2, 171-184.
A detailed karyotype analysis of the blood cells taken from 20 nephropaths and their relatives, and a population-genetic analysis of more than 30 families with about 700 individuals from a region where the Balkan nephropathy is common, was done. Cytogenetic studies did not succeed in discovering any significant change in the chromosomes which would be specific for the disease. Population-genetic investigation have suggested a possible role of genetic factors in the development of the disease, but a resistance (or a susceptibility) to some environmental factors may be also a property which could be inherited.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 185-192
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
USEFUL MUTATIONS INDUCED WITH GAMMA RAYS IN THE FIELD BEAN (VICIA FAB A MINOR)
A.M. ABO-HEGAZI and A. TAVČAR
Radiobiology Dept., Atomic Energy Establishment, Cairo, U.A.R.
and
Plant Breeding and Genetics Dept., Faculty of Agriculture, Zagreb, Yugoslavia
Abstract
Abo-Hegazi, A. M. and Tavčar, A. (1970): Useful mutations induced with gamma rays in the field bean (Vicia faba minor). - Genetika, Vol. 2, No. 2, 185-192.
The field bean (Vicia faba minor) is of great economic importance in U.A.R... Since numerous problems in the breeding of this crop by the use of conventional methods have been experienced, the induction of mutations by gamma ray (MCo) has proved to be fruitful. Doses used were: 500, 1000, 2000, 3000, 4000 and 5000 r. In the third generation mutations resistant to brown spot (Botrytis fabae) or to rust (Uromyces fabae) were obtained. Among the mutations induced were: dwarfs, giants, a greater total number and more fertile branches and pods per plant, a higher number of seeds, a greater seed yield (weight) and heavier seed. The authors recommend the use of doses around 2000 or 3000 r for further breeding programmes.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 193-195
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
RELIABILITY OF DISTINGUISHING DICENTRIC CHROMATIDS FROM CHROMOSOME STICKINESS IN BARLEY MICROSPOROCYTES
I. KREFT
Biotehniška fakulteta, Ljubljana
Abstract
Kreft, I. (1970): Reliability of distinguishing dicentric chromatids from chromosome stickiness in barley microsporocytes. - Genetika, Vol. 2, No. 2, 193-195.
In analysing frequencies of different dicentric chromatid configurations it is very important to avoid errors, which are the result of misinterpretation of some anaphase configurations. Chromosome stickiness configurations may be misinterpretated as dicentric chromatids or vice versa. Morphological differencies are not always reliable. Chromosome stickiness is frequent in early anaphase I and early anaphase II, but very rare in late anaphases I and II. In contrast to chromosome stickiness configurations, dicentric chromatids are very resistant. To obtain unbiased results it is necessary to score frequencies of configurations in late anaphase only, and therefore to determine a fixed limit between early and late anaphase. Such a limit may be the certain relative distance of the nearest chromosomes to the poles.
Published in „GENETIKA“ Vol. 2, No.2 (1970), pp. 198-208
© 1970 Serbian Genetics Society
S. Bajića 1, 11185 Belgrade-Zemun
Serbia
Original scientific paper
SOME BIOCHEMICAL CHANGES DURING THE EARLY STAGES OF DEVELOPMENT OF SEA URCHIN EMBRYOS
V. R. GLIŠIN
International Laboratory of Molecular Embryology, Kotor and
Laboratory of Molecular Biology, Institute for Biological Research Belgrade, Yugoslavia
Abstract
Abstract is not printed.