somatic crossing-over
The mus309 mutation, defective in DNA double strand break repair, increases the frequency of X ray induced somatic crossing over in Drosophila melanogaster, but the effect is not dose rate dependent
... on somatic crossing over in the X chromosome of Drosophila melanogaster was studied in two different ...induced somatic crossing over increased in the mu- tant flies with both ...
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SOMATIC CROSSING OVER IN GLYCINE MAX (L.) MERRILL: EFFECT OF SOME INHIBITORS OF DNA SYNTHESIS ON THE INDUCTION OF SOMATIC CROSSING OVER AND POINT MUTATIONS
... The treatments with caffeine and actinomycin D increased the fre- quency of somatic crossing over as measured by the frequency of double spots on Y,, y , , leaves, [r] ...
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THE EFFECT OF X-IRRADIATION ON SOMATIC CROSSING OVER IN DROSOPHILA MELANOGASTER
... The finding of no mosaic spots on the wings, even in flies in which X rays induced high rates of abdominal somatic crossing over, lead to the conclusion that i[r] ...
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SOMATIC CROSSING OVER AND SEGREGATION IN DROSOPHILA MELANOGASTER
... I n order to justify the assumption of somatic segregation as a general cause of the occurrence of mosaic spots we have here to deal with those cases of table 4 which did n[r] ...
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SOMATIC CROSSING OVER IN GLYCINE MAX (L.) MERRILL: MUTAGENICITY OF SODIUM AZIDE AND LACK OF SYNERGISTIC EFFECT WITH CAFFEINE AND MITOMYCIN C
... In this case, as in studies described in foregoing tables, the double spots increased the least in frequency-about twice that of the control in 0.01% and three times in 0[r] ...
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AGE DEPENDENCE OF THE LOCATIONS OF X-RAY INDUCED SOMATIC CROSSING OVER IN DROSOPHILA
... not only confirmed the original findings with respect to very young larval stages, but also suggested that as development proceeds there is a change in the ratio of X-ray induced so[r] ...
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SOMATIC CROSSING-OVER AND ELIMINATION OF RING X CHROMOSOMES OF DROSOPHILA MELANOGASTER
... With two rings in repulsion phase (series 8), the mosaicism due to elimination would be doubled to 2e since loss of either ring could produce a spot; that attributable to crossing- [r] ...
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THE INFLUENCE OF MINUTES UPON SOMATIC CROSSING OVER IN DROSOPHILA MELANOGASTER
... This is reflected in the appearance of only one case of spontaneous crossing over (control at 32°C) and the lower frequency of Minute-induced crossovers except when [r] ...
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SOMATIC CROSSING OVER IN RELATIONSHIP TO HETEROCHROMATIN IN DROSOPHILA MELANOGASTER
... mosaic spots observed for normal rod chromosomes are due to single exchange events, and the number of exchanges increases with added amount of heterochro- matin; certain mos[r] ...
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SOMATIC CROSSING OVER AND ITS GENETIC CONTROL IN DROSOPHILA
... The frequency of spots resulting from backcrossing Fl’s of crosses between the high and low lines revealed that factors governing the frequency of X chromo- some somatic crossi[r] ...
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LACK OF EFFECT OF A PREVIOUS MEIOTIC EXCHANGE ON SOMATIC CROSSING OVER IN DROSOPHILA
... Only those abdomens were scored which came from females whose progeny (generation 4) fulfilled the following criteria: some of the progeny must show the yellow and [r] ...
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STUDIES OF CELL LETHALITY OF A SMALL DEFICIENCY IN DROSOPHILA MELANOGASTER
... Unexpected mosaic spots: In the third experiment involving somatic crossing over (Table 3 ) two unexpected types of spots were found, those in which a yellow- hairless region[r] ...
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Meiotic Crossing Over in Maize Knob Heterochromatin
... of crossing over in pericentric and NOR heterochromatin justify the assumption that crossing over is suppressed in all heterochromatin regardless of its chro- mosomal position? While there is ...
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A COMPARISON OF TRIPLOID AND DIPLOID CROSSING OVER FOR CHROMOSOME II OF DROSOPHILA MELANOGASTER
... (1) For central regions of the second chromosome of Drosophila melano- gaster triploid crossing over is greater than diploid crossing over (T/D is about 1.4); for the region[r] ...
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GENETIC EFFECTS OF DEUTERIUM OXIDE IN DROSOPHILA MELANOGASTER
... The genetic effects studied were sterility, the recessive lethal mutation rate in the X chromosome, meiotic and mitotic crossing over between X chromosomes, crossing over b[r] ...
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Crossing over; taking refuge: A contrapuntal reading
... and refugees will be caught between governments and people smugglers as was evident from journalist, Natalie O’Brien’s 9-month investigation into the sinking of a boat, the Siev X, with 105 Hazara Asylum seekers and ...
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SEX AND CROSSING OVER IN TRIBOLIUM CASTANEUM
... Data are presented to show that recombination values of a number of genes lo- cated on the seventh linkage group (Short antenna, Fused tarsi and antennae, blistered elytra, an[r] ...
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AN EXPERIMENTAL AND THEORETICAL STUDY OF CHROMATID CROSSING OVER
... Therefore, we see that in REDFIELD’S experiments where her calculations of triploid crossing over are based on the constitution of those eggs which received a single chromosome t[r] ...
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CROSSING OVER AND GENE REARRANGEMENT IN FLOWERING PLANTS
... (The percentage figures of the crossover chart of a chromosome are made to include the double crossovers, though these do not normally affect the recombina- tions.)[r] ...
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FURTHER EVIDENCE OF LINKAGE WITH CROSSING OVER IN OENOTHERA
... I n Science for September 9, 1921, it was first announced that the factor for revolute leaves is included in the same chromosome with those for seven or eight other factors [r] ...
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