COMPOUND AUTOSOMES IN DROSOPHILA MELANOGASTER: THE MEIOTIC BEHAVIOR OF COMPOUND THIRDS
نویسندگان
چکیده
منابع مشابه
Compound autosomes in Drosophila melanogaster: The meiotic behavior of compound thirds.
Studies of the meiotic distribution of compound-3 chromosomes in males and females of Drosophila melanogaster provided the following results. (1) From females homozygous for the standard arrangement of all chromosomes other than C(3L) and C(3R), less than 5% of the gametes recovered were nullosomic or disomic for compound-3 chromosomes. The frequency of nonsegregation differed between strains, ...
متن کاملMeiotic behavior of compound autosomes in females of Drosophila melanogaster: interchromosomal effects and the source of spontaneous nonsegregation.
In females of Drosophila melanogaster, compound autosomes enter the repulsion phase of meiosis uncommitted to a particular segregation pattern because their centromeres are not restricted to a bivalent pairing complex as a consequence of crossing over. Their distribution at anaphase, therefore, is determined by some meiotic property other than exchange pairing, a property that for many years ha...
متن کاملThe meiotic behavior of tandem acrocentric compound X chromosomes in Drosophila melanogaster.
compound X chromosome consists of two X chromosomes joined to form a A single chromosome containing one centromere, two euchromatically complete (or almost complete) X chromosome elements, and heterochromatic regions whose distribution can be specified but whose content is uncertain (NOVITSKI 1954). The elements of a compound may be in reversed or tandem sequence, the centromere may be between ...
متن کاملMeiotic Behavior of Tandem Me Tacentric Compound X Chromosomes in Drosophila Melanogaster.
tandem metacentric compound X chromosome is composed of two X chromoA somes attached to a medially located centromere and arranged in tandem sequence so that the synaptic configuration is a spiral (NOVITSKI 1954). An approximation to the tandem metacentric has been achieved by the construction of an attached-X heterozygous for Zn(l)y4 ( SIDOROV, SOKOLOV and TROFIMOV 1936; STURTEVANT and BEADLE ...
متن کاملGenetic analysis of the proximal region of chromosome 2 of Drosophila melanogaster. I. Detachment products of compound autosomes.
To examine the genetic composition of proximal heterochromatin in chromosome 2, the detachment of compound second autosomes, for generating proximal deficiencies, appeared a promising method. Compound seconds were detached by gamma radiation. A fraction of the detachment products were recessive lethals owing to proximal deficiencies. Analysis by inter se complementation, pseudo-dominance tests ...
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ژورنال
عنوان ژورنال: Genetics
سال: 1975
ISSN: 1943-2631
DOI: 10.1093/genetics/81.2.293