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X heterochromatin subdivision and cytogenetic analysis in Sciara coprophila (diptera, sciaridae)
The so-called controlling element (CE), which normally programs the curious behavior of the sex chromosome in this genus, has been localized in the short right arm of the polytene X in S. coprophila.Expand
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X heterochromatin subdivision and cytogenetic analysis in Sciara coprophila (Diptera, Sciaridae)
Five new translocations recovered from irradiated sperm, each having a break-point in the proximal X heterochromatin, have been designated T23, T29, T32, T40, and T70. These translocations, togetherExpand
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An inducible change in state on the chromosomes of Sciara: Its effects on the genetic components of the X
Normally in Sciara males the sex chromosome constitution of the soma (XmO) differs from that of the germ line (XmXp), the single X being of maternal origin. Males which are patroclinous for theirExpand
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Experimental alterations in the chromosome constitution of Sciara
SummaryUsing two reciprocal translocations between chromosomes X and IV in S. coprophila it has been possible to derive two kinds of aneuploid females. Both of the aneuploid complements areExpand
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X-RAY EFFECTS ON SEX OF PROGENY IN SCIARA COPROPHILA
Among the progeny of female-producers bred to irradiated males there appear an appreciable number of exceptional sons, all of which are matroclinous for their sex-linked genes. Among the progeny ofExpand
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