crossing over
THE VARIABILITY OF CROSSING OVER IN MAIZE
... If all of the plants were actually identical in crossing over, (that is, if the variations found resulted wholly from error of sampling), only about half of the [r] ...
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CONSEQUENCES OF CROSSING OVER IN OÖGONIAL CELLS
... If the spermatogonial crossing over map applies also to the gonial cells of females, that distribution combined with distal homozygosis would account for the great [r] ...
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CENTRIC PAIRING AND CROSSING-OVER IN DROSOPHILA MELANOGASTER
... A repulsion of centromeres prior to the time of crossing-over could explain this role of centric pairing in terms of chromosome mechanics, without invoking regional differenc[r] ...
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THE EFFECTS OF INVERSIONS ON CROSSING OVER IN DROSOPHILA ROBUSTA
... an inversion in each arm, and crossing over in the central section is observed, it is found that recombination is very low unless there is a considerable degree of stru[r] ...
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EVIDENCE FOR SISTER-STRAND CROSSING OVER IN MAIZE
... Thus, the frequency of single bridges in AI1 resulting from double non-sister crossovers associated with sister-strand crossing over should still be equal to the frequenc[r] ...
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THE INDUCTION OF OÖGONIAL CROSSING OVER IN DROSOPHILA MELANOGASTER
... From the comparisons of different kinds of crossing over there are indi- cations that the results which have in the past been obtained by subjecting normal females to X-rays or [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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Meiotic Crossing Over in Maize Knob Heterochromatin
... In the research described here, we used FISH of the maize 180-bp knob repeat to determine the location of knobs on SC spreads and the length of SC into which loops of knob heterochromatin were inserted. In agreement with ...
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Crossing over; taking refuge: A contrapuntal reading
... Fanon offers another perspective on demonic possession, namely that in situations of oppression or colonisation, such as existed for the indigenous of the region of Gadara, a person can take on what might be seen as a ...
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STUDIES ON THE MECHANISM OF CROSSING OVER
... Thus, in the absence of sister-strand crossing over, only 2-strand double somatic crossover classes would be expected on the hypothesis that crossing over between homo[r] ...
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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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EFFECTS OF TEMPERATURE ON CROSSING OVER IN NEUROSPORA
... It has been demonstrated ( STADLER and TOWE 1962) that inbreeding results in an increase in crossing over in the asco-centromere region; a backcross to asco a of one of the [r] ...
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Richard Goldschmidt and the Crossing-Over Controversy
... tion” of factors, but rather the “relative effect” of the logical interpretation for a mechanical morphological respective forces in play. “The amount of crossing over,” model. Here, as in his subsequent ...
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CROSSING OVER NEAR THE SPINDLE ATTACHMENT OF THE X CHROMOSOMES IN ATTACHED-X TRIPLOIDS OF DROSOPHILA MELANOGASTER
... A study of crossing over in triploid females of Drosophila melanogaster (BEADLE 1934) with two of the X chromosomes attached showed that crossing over near the spindle[r] ...
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CROSSING OVER IN THE THIRD CHROMOSOMES OF TRIPLOIDS OF DROSOPHILA MELANOGASTER
... However, although the differences between triploid and diploid crossing over are not to be explained on the basis of a differential effect depending upon distance from t[r] ...
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THE GENOTYPIC CONTROL OF CROSSING OVER IN DROSOPHILA PSEUDOOBSCURA
... It will be seen that the ST homozygotes differ significantly from the C H homozygotes (comparison 1-2).. Again the ST homozygotes differ significantly from both the AR [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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CHROMOSOME COILING IN RELATION TO MEIOSIS AND CROSSING OVER
... The direction of coiling of minor spirals is the same for homolo- gous arms of somatic chromosomes; the direction of coiling is reversed a t the spindle fiber attachment point, [r] ...
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CROSSING OVER IN TOMATOES TRISOMIC FOR THE "A" OR FIRST CHROMOSOME
... No recessive potato-leaf ccc plants occurred among 29 trisomic progeny of a CCc triplo-HXcc diploid (H=fourth chromosome) but one ccc tri- somic occurred in the progeny of [r] ...
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CHROMOSOME STRUCTURE AND CROSSING OVER
... The model of chromosome structure and replication proposed here (Figure 2) reconciles much of the seemingly contradictory evidence for and against multistranded and[r] ...
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