A POSITIVE CORRELATION BETWEEN CROSSING OVER WITHIN HETEROZYGOUS PERICENTRIC INVERSIONS AND REDUCED EGG HATCH OF DROSOPHILA FEMALES
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چکیده
منابع مشابه
A positive correlation between crossing over within heterozygous pericentric inversions and reduced egg hatch of Drosophila females.
XTENSIVE chromosomal polymorphism, probably due to pericentric inverE sions, has been reported in animals as dissimilar as grasshoppers (WHITE 1958) and mice ( OHNO et al. 1966). Inversion polymorphism is also prevalent in natural populations of many Drosophila species, but rarely are the inversions pericentric. The infrequency with which pericentric as compared with paracentric inversions are ...
متن کاملExchange within heterozygous inversions in Drosophila melanogaster.
The exchange behavior of non-attached, whole arm, X chromosome inversions was reexamined using nondisjunction in XXY females as an indirect measure of the frequency of nonexchange tetrads. Crossing over is quite normal in these inversion heterozygotes and is independent of the arrangement of the basal heterochromatin.
متن کاملThe effect of heterozygous autosomal inversions on induced exchanges between the attached-X and Y chromosomes in Drosophila melanogaster females.
INCE the original observation of STURTEVANT (1919) a large body of data has accumulated substantiating the contention that, in Drosophila melanogaster females, inversion heterozygosity in one part of the genome increases the frequency of recombination in the remainder of the genome. This effect has been demonstrated for spontaneous meiotic crossing over (see, for instance, SCHULTZ and REDFIELD ...
متن کاملThe Relations of Inversions in the X Chromosome of Drosophila Melanogaster to Crossing over and Disjunction.
CONTENTS Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554 Inversions studied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555 Inversion scute-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
متن کاملNonhomologous synapsis and reduced crossing over in a heterozygous paracentric inversion in Saccharomyces cerevisiae.
Homologous chromosome synapsis ("homosynapsis") and crossing over are well-conserved aspects of meiotic chromosome behavior. The long-standing assumption that these two processes are causally related has been challenged recently by observations in Saccharomyces cerevisiae of significant levels of crossing over (1) between small sequences at nonhomologous locations and (2) in mutants where synap...
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ژورنال
عنوان ژورنال: Genetics
سال: 1967
ISSN: 1943-2631
DOI: 10.1093/genetics/56.1.179