Effects of Genetic Recombination and Population Subdivision on Nucleotide Sequence Variation in Drosophila ananassae

1994 ◽  
pp. 57-66 ◽  
Author(s):  
Wolfgang Stephan
Keyword(s):  
Nucleotide Sequence ◽  
Sequence Variation ◽  
Genetic Recombination ◽  
Drosophila Ananassae ◽  
Population Subdivision ◽  
Nucleotide Sequence Variation

scholarly journals A Survey of Chromosomal and Nucleotide Sequence Variation inDrosophila miranda

Genetics ◽  
2003 ◽  
Vol 164 (4) ◽  
pp. 1369-1381 ◽  
Author(s):  
Soojin Yi ◽  
Doris Bachtrog ◽  
Brian Charlesworth
Keyword(s):  
Nucleotide Sequence ◽  
Sequence Variation ◽  
General Pattern ◽  
Population Expansion ◽  
Convincing Evidence ◽  
Population Subdivision ◽  
Effective Population ◽  
Recent Population Expansion ◽  
Local Selection ◽  
Nucleotide Sequence Variation

AbstractThere have recently been several studies of the evolution of Y chromosome degeneration and dosage compensation using the neo-sex chromosomes of Drosophila miranda as a model system. To understand these evolutionary processes more fully, it is necessary to document the general pattern of genetic variation in this species. Here we report a survey of chromosomal variation, as well as polymorphism and divergence data, for 12 nuclear genes of D. miranda. These genes exhibit varying levels of DNA sequence polymorphism. Compared to its well-studied sibling species D. pseudoobscura, D. miranda has much less nucleotide sequence variation, and the effective population size of this species is inferred to be several-fold lower. Nevertheless, it harbors a few inversion polymorphisms, one of which involves the neo-X chromosome. There is no convincing evidence for a recent population expansion in D. miranda, in contrast to D. pseudoobscura. The pattern of population subdivision previously observed for the X-linked gene period is not seen for the other loci, suggesting that there is no general population subdivision in D. miranda. However, data on an additional region of period confirm population subdivision for this gene, suggesting that local selection is operating at or near period to promote differentiation between populations.

scholarly journals Cytochrome b Nucleotide Sequence Variation Among the Atlantic Alcidae

Hereditas ◽  
2004 ◽  
Vol 119 (3) ◽  
pp. 245-252 ◽  
Author(s):  
V. L. Friesen ◽  
W. A. Montevecchi ◽  
W. S. Davidson
Keyword(s):  
Nucleotide Sequence ◽  
Cytochrome B ◽  
Sequence Variation ◽  
Nucleotide Sequence Variation

scholarly journals Nucleotide sequence variation associated with β-amylase deficiency in the sweet potato Ipomoea batatas (L.) Lam

2009 ◽  
Vol 59 (3) ◽  
pp. 209-216 ◽  
Author(s):  
Nadia Anwar ◽  
Akira Kikuchi ◽  
Toru Kumagai ◽  
Kazuo N. Watanabe
Keyword(s):  
Nucleotide Sequence ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Sequence Variation ◽  
Nucleotide Sequence Variation

High nucleotide sequence variation of avirulent gene, AVR-Pita1, in Thai rice blast fungus population

2020 ◽  
Vol 99 (1) ◽  
Author(s):  
Katanyutita Damchuay ◽  
Apinya Longya ◽  
Tanee Sriwongchai ◽  
Pattavipha Songkumarn ◽  
Nonglak Parinthawong ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Rice Blast ◽  
Sequence Variation ◽  
Rice Blast Fungus ◽  
Blast Fungus ◽  
Nucleotide Sequence Variation
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