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Reference
Citation	Heino, T.I. (1989). Polytene chromosomes from ovarian pseudonurse cells of the Drosophila melanogaster otu mutant. I. Photographic map of chromosome 3. Chromosoma 97: 363--373. (Export to RIS)
FlyBase ID	FBrf0049427
Publication Type	Research paper
PubMed ID	2498045
PubMed Abstract	Certain mutant alleles of the otu locus in Drosophila melanogaster produce abnormal nurse cells in the ovaries. These cells are called pseudonurse cells (PNC), since they generate polytene chromosomes instead of endopolyploid ones and do not normally have an oocyte to nurse. The banding pattern of polytene chromosome 3 from the salivary glands (SG) and from PNCs of homozygous otu1 females was compared and a detailed photomap of PNC chromosomes with different degrees of polyteny is presented. The banding pattern was found to be strikingly similiar in the two tissues. The puffing pattern of the PNC chromosomes is discussed. No constrictions or breaks were found in the PNC chromosomes which seems to indicate that these sites, which are known to be underreplicated in the SG chromosomes, are equally replicated along with the rest of the chromosomes in the PNC nuclei.
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Language of Publication	English
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Publication Type	Journal
Abbreviation	Chromosoma
Title	Chromosoma
Publication Year	1939-
ISBN/ISSN	0009-5915
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Genes (1)
	otu