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- Publications
- Influence
X heterochromatin subdivision and cytogenetic analysis in Sciara coprophila (diptera, sciaridae)
- Helen V. Crouse
- Biology
- Chromosoma
- 1 September 1979
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
X heterochromatin subdivision and cytogenetic analysis in Sciara coprophila (Diptera, Sciaridae)
- Helen V. Crouse
- Biology
- Chromosoma
- 2004
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, together… Expand
An inducible change in state on the chromosomes of Sciara: Its effects on the genetic components of the X
- Helen V. Crouse
- Biology
- Chromosoma
- 2004
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 their… Expand
Experimental alterations in the chromosome constitution of Sciara
- Helen V. Crouse
- Biology
- Chromosoma
- 1 July 1965
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 are… Expand
X-RAY EFFECTS ON SEX OF PROGENY IN SCIARA COPROPHILA
- Helen V. Crouse
- Biology
- 1 February 1961
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 of… Expand