Ultrastructure of E1 + 2 + 9 + 12 inversion breakpoints in Drosophila subobscura.

Abstract:

:The ultrastructure of the Drosophila subobscura chromosome regions around the breakpoints of the complex E1 + 2 + 9 + 12 gene arrangement was analyzed. This overlapping inversion is formed by the association of the E1, E2, E9, and E12 simple inversions. Ultrastructure of sections involving 58D/59A, 61C/D, 62D/63A, 64B/C, 67A/B, and 68B/C breakpoints on Est chromosomes were compared with the ultrastructure of sections involving chromosomes were compared with the ultrastructure of sections involving 58D/68B, 62D/64C, 59A/63A, 64B/68C, 67B/61C, and 67A/61B breakpoints on E1 + 2 + 9 + 12 chromosomes. No detectable changes of structural organization on banding patterns induced by the E1 + 2 + 9 + 12 inversion were found. Ultrastructural analysis of the two E12 breakpoints has, however, facilitated the analysis of the left boundary of E12 inversion. Accordingly, we propose 61B/C as a new breakpoint instead of 61C/D.

journal_name

Biol Cell

journal_title

Biology of the cell

authors

Cuenca JB,Saura AO,Sorsa V,de Frutos R

doi

10.1016/0248-4900(90)90359-b

subject

Has Abstract

pub_date

1990-01-01 00:00:00

pages

39-51

issue

1-2

eissn

0248-4900

issn

1768-322X

journal_volume

70

pub_type

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