Abstract
Two variants of X chromosome Stellate genes responsible for crystal formation in XO male primary spermatocytes occupy different genome positions. The majority if not all of the 1250-bp Stellate genes are located at the 12E site where the Ste locus has been mapped and almost all of the 1150-bp Stellate repeats are concentrated in the distal X heterochromatin. Sequencing of Stellate genes derived from X heterochromatin reveals the preservation of their open reading frames and precise matching with some Stellate cDNAs reported earlier. At least some heterochromatic Stellate genes are suggested to be expressed and, therefore, involved in the interaction with the Y chromosome locus Su(Ste), as are the Stellate genes from 12E.
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Selected References
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