GENETIC RECOMBINATION AND CLONAL SELECTION IN DROSOPHILA MERCATORUM
نویسندگان
چکیده
منابع مشابه
The Parthenogenetic Capacities and Genetic Structures of Sympatric Populations of DROSOPHILA MERCATORUM and DROSOPHILA HYDEI.
Drosophila mercatorum is a sexual species that can reproduce parthenogenetically in the laboratory. A previous study showed that a natural population of D. mercatorum inhabiting the Kamuela garbage dump on the Island of Hawaii could produce both viable parthenogenetic adults and self-sustaining parthenogenetic lines. The present study deals with a second screen for parthenogenesis and an isozym...
متن کاملThe Unit of Selection in DROSOPHILA MERCATORUM. II. Genetic Revolution and the Origin of Coadapted Genomes in Parthenogenetic Strains.
Drosophila mercatorum is a sexual species that can reproduce parthenogenetically. Previous studies revealed that parthenogenetic strains had "coadapted genomes" with high fitness under parthenogenesis and total homozygosity due to nonadditive and nonmultiplicative fitness interactions between chromosomal segments scattered throughout the genome. To study the evolutionary origins of such coadapt...
متن کاملSELECTION FOR MALE RECOMBINATION IN DROSOPHILA MELANOGASTERl
Two-way selection for male recombination over seven intervals of the third chromosome in Drosophila melanogaster was practiced for nine generations followed by relaxed selection for five generations. Significant responses in both directions were observed but these mainly occurred in early generations in the low line and in later generations in the high line. Divergence of male recombination fre...
متن کاملSelection for mating reluctance in females of a diploid parthenogenetic strain of Drosophila mercatorum.
A diploid parthenogenetic strain of Drosophila mercatorum was outcrossed to produce genetic variance among the impaternate female offspring. Selection experiments were carried out for reluctance of the parthenogenetic females to mate. After only two cycles of selection, a parthenogenetic strain which is significantly less receptive to males from three different bisexual strains was obtained. It...
متن کاملThe unit of selection in Drosophila mercatorum. I. The interation of selection and meiosis in parthenogenetic strains.
An important problem in population genetics is the determination of the level of genetic organization to which fitness measures can be ascribed that yield an adequate description or prediction of the outcome of selection in populations. To study this problem, we used two strains of Drosophila merca torum (S-1-Im and O-3-Im) that are capable of both sexual and parthenogenetic reproduction, a fea...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Genetics
سال: 1978
ISSN: 1943-2631
DOI: 10.1093/genetics/89.1.193