Magnification in Drosophila: evidence for an inducible rDNA-specific recombination system
1994
Komma, D.J. | Atwood, K.C.
An experiment is described that provides evidence for an exchange mechanism to explain the increase in ribosomal gene number that occurs during bobbed magnification. We show that bobbed and bobbed-lethal alleles do not magnify in closed X chromosomes, but that a spontaneous ring opening restores normal magnification. The results provide strong evidence that the elementary magnifying event is unequal sister chromatid exchange, and can be interpreted in the framework of an inducible rDNA-specific recombination system as the basis of ribosomal gene magnification.
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书目信息
其它主题
Amplification; Ring chromosomes; Bbl allele; Gene amplification; Bb allele; Male; Ribosomal; Opened ring chromosome; Unequal sister chromatid exchange; X chromosome; Female; Genetic; Ring x chromosome; Sister chromatid exchange
语言
英语
注释
2019-12-04
类型
Journal Article; Text
2024-02-27
2026-02-03
MODS