Polytene chromosome map and inversion polymorphism in Drosophila mediopunctata
Mem. Inst. Oswaldo Cruz
; 97(5): 691-694, July 2002. ilus, tab, graf
Article
in English
| LILACS
| ID: lil-321215
Responsible library:
BR1.1
ABSTRACT
Drosophila mediopunctata belongs to the tripunctata group, and is one of the commonest Drosophila species collected in some places in Brazil, especially in the winter. A standard map of the polytene chromosomes is presented. The breakpoints of the naturally occurring chromosomal rearrangements are marked on the map. The distribution of breaking points through the chromosomes of D. mediopunctata is apparently non-random. Chromosomes X, II and IV show inversion polymorphisms. Chromosome II is the most polymorphic, with 17 inversions, 8 inversions in the distal region and 9 in the proximal region. Chromosome X has four different gene arrangements, while chromosome IV has only two
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Polymorphism, Genetic
/
Chromosome Mapping
/
Drosophila Proteins
/
Drosophila
/
Chromosome Inversion
Limits:
Animals
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2002
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Fiocruz/BR
/
Universidade Estadual de Campinas/BR