GENETIC IDENTIFICATION OF THE SEX CHROMOSOMES IN SCIARA (DIPTERA)

Observations on the inheritance of sex in Sciara ocellaris (Diptera).

Genetic Evidence of a Selective Segregation of Chromosomes in Sciara (Diptera).

This shows that miniature-a mutates to wild type at the formation of germ cells in miniature-a males and heterozygous and homozygous females. Miniature-a mutates to wild type in somatic cells as well. Mosaic flies having part of the wing miniature and the other part wild type are very frequent and are easily distinguished. If miniature-a wings are examined under high magnification almost all of...

Numerous Transitions of Sex Chromosomes in Diptera

Many species groups, including mammals and many insects, determine sex using heteromorphic sex chromosomes. Diptera flies, which include the model Drosophila melanogaster, generally have XY sex chromosomes and a conserved karyotype consisting of six chromosomal arms (five large rods and a small dot), but superficially similar karyotypes may conceal the true extent of sex chromosome variation. H...

Errors in the Elimination of X Chromosomes in SCIARA OCELLARIS.

It was previously assumed that the X-linked recessive mutation, sepia, induced errors in X-chromosome elimination during early embryogenesis of Sciara ocellaris. The results obtained in the present analysis corroborate this assumption and permit a further classification of the type of error this mutation induces. Among 85,244 individuals analyzed, three kinds of aberrant flies were identified: ...

phylogeography and genetic diversity of the lesser mouse- eared bat (myotis blythii) in iran

in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...