Moth sex chromatin probed by comparative genomic hybridization (CGH).

Abstract:

:Abstract: Comparative genomic hybridization (CGH) with a probe mixture of differently labeled genomic DNA from females and males highlighted the W chromosomes in mitotic plates and the W chromatin in polyploid interphase nuclei of the silkworm Bombyx mori, the flour moth Ephestia kuehniella, and the wax moth Galleria mellonella. The overproportionate fluorescence signal indicated an accumulation of repetitive sequences in the respective W chromosomes. Measurements of the fluorescence signals revealed two components, one that is present also in male DNA (non-W chromosomes) and another one that is present only in or preponderantly in female DNA (W chromosomes). While the W chromosomes of E. kuehniella and G. mellonella had both components, that of B. mori appeared to lack the latter component. Our results show that CGH can be applied to obtain a first estimate of the sequence composition of sex chromosomes in species from which otherwise little is known on the molecular level.

journal_name

Genome

journal_title

Genome

authors

Sahara K,Marec F,Eickhoff U,Traut W

doi

10.1139/g03-003

subject

Has Abstract

pub_date

2003-04-01 00:00:00

pages

339-42

issue

2

eissn

0831-2796

issn

1480-3321

pii

g03-003

journal_volume

46

pub_type

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