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The Role of Heterochromatin in Karyotype Variation Among Hawaiian Picture-Winged Drosophila
|Title:||The Role of Heterochromatin in Karyotype Variation Among Hawaiian Picture-Winged Drosophila|
|Authors:||Clayton, Frances E.|
|Publisher:||University of Hawaii Press|
|Citation:||Clayton FE. 1988. The role of heterochromatin in karyotype variation Among Hawaiian picture-winged Drosophila. Pac Sci 42(1-2): 28-47.|
|Abstract:||A comparison is made of the amount and distribution of heterochromatin
in the mitotic chromosomes of species of the Hawaiian picture-winged
Drosophila, and metaphase configurations among these species are
compared with those from other regions. Of 103 picture-winged species, only
three species (D . melanocephala, D. cyrtoloma, and D. prostopalpis) have any
metacentric or submetacentric chromosomes, and only six species have a haploid
complement of six acrocentric chromosomes rather than the "primitive"
karyotype of five rods and a microchromosome. All karyotype modifications
among the picture-winged species can be explained on the basis of modifications
in the amount and distribution of heterochromatin; there is no evidence
of pericentric inversions or chromosomal fusion.
|Appears in Collections:||
Pacific Science Volume 42, Numbers 1-2, 1988|
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