On the Sterility of the Interracial Hybrids in Drosophila Pseudoobscura.
نویسنده
چکیده
منابع مشابه
Genetics of male and female sterility in hybrids of Drosophila pseudoobscura and D. persimilis.
The genetic basis of male and female sterility in hybrids of Drosophila pseudoobscura-Drosophila persimilis was studied using backcross analysis. Previous studies indirectly assessed male fertility by measuring testis size; these studies concluded that male sterility results from an X chromosome-autosome imbalance. By directly scoring for the production of motile sperm, male sterility is shown ...
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Running title: Genetics of speciation in Drosophila pseudoobscura. ABSTRACT Understanding the genetic basis of reproductive isolation between recently diverged species is a central problem in evolutionary genetics. Here, I present analyses of the genetic architecture underlying hybrid male sterility and segregation distortion between the Bogota and USA subspecies of D. pseudoobscura. Previously...
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NCREASING attention is being focused on the use of Drosophila as a I convenient organism for investigating such fundamental problems as the formation of new species and interspecific sterility. Studies of the hybrid from the cross D. melarzogasterXD. simulans by PATAU (I935), and by HORTON (1939), and D. pseudoobscuraXD. miranda by DOBZHANSKY and TAN (1936), as well as studies of the hybrids fr...
متن کاملCharacterization of a male-predominant antisense transcript underexpressed in hybrids of Drosophila pseudoobscura and D. persimilis.
Characterizing genes that are misregulated in hybrids may elucidate the genetic basis of hybrid sterility or other hybrid dysfunctions that contribute to speciation. Previously, a small segment of a male-predominant transcript that is underexpressed in adult male hybrids of Drosophila pseudoobscura and D. persimilis relative to pure species was identified in a differential display screen. Here,...
متن کاملGenetic architecture of male sterility and segregation distortion in Drosophila pseudoobscura Bogota-USA hybrids.
Understanding the genetic basis of reproductive isolation between recently diverged species is a central problem in evolutionary genetics. Here, I present analyses of the genetic architecture underlying hybrid male sterility and segregation distortion between the Bogota and USA subspecies of Drosophila pseudoobscura. Previously, a single gene, Overdrive (Ovd), was shown to be necessary but not ...
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عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 19 4 شماره
صفحات -
تاریخ انتشار 2005