NON-HOMOLOGOUS PAIRING AND CROSSING OVER IN DROSOPHILA MELANOGASTER
نویسندگان
چکیده
منابع مشابه
Spermatogonial crossing over in Drosophila melanogaster and Drosophila ananassae.
FRIESEN (1936) induced crossing over in Drosophila males by X rays and found that most of the exchanges were in a preferred region, the complementary crossover classes were very unequal, and the percent recombination varied greatly from individual to individual. According to him, the data 'were sufficient to demonstrate the occurrence of spermatogonial crossing over. WHITTINGHILL (1937) found t...
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THE ACTION OF hfINUTE FACTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 629 Blond-Minute . . . . . . . . , . . . , . . . . . . . . . . , . . . . . . . . . , , , . . , . , . . . . Autosomal Minutes and sex-linked spots. . . . . . . . . . . . . . . . . . . . . . The specificity of the effects of sex-linked and autosomal Minutes. . . . . . . ...
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OMATIC crossing over, was first demonstrated by STERN (1936) in Drosophila srneZarzogaster, and has since been shown to occur in fungi. From the observation of single and twin mosaic spots in the hypoderm, STERN concluded that the exchanges occur at the four-strand stage, and that the chromatids segregate equationally proximal to the point of exchange and reductionally distal to the point of ex...
متن کاملDoes Sister-Strand Crossing over Occur in Drosophila Melanogaster.
The problem of whether sister-strand crossing over does or does not occur is of some importance for general theories of crossing over. In most genetic experiments, i t is not possible to decide whether sister-strand exchange has or has not occurred because the results of both alternatives are indistinguishable. But with the use of the closed-X chromosome, described by L. V. MORGAN (1933), a sol...
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ژورنال
عنوان ژورنال: Genetics
سال: 1959
ISSN: 1943-2631
DOI: 10.1093/genetics/44.6.1243