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Tempo and mode in evolution.
George Gaylord Simpson said in his classic Tempo and Mode in Evolution (1) that paleontologists enjoy special advantages over geneticists on two evolutionary topics. One general topic, suggested by… Expand
Nucleotide sequences provide evidence of genetic exchange among distantly related lineages of Trypanosoma cruzi
- C. A. Machado, F. Ayala
- Biology, Medicine
- Proceedings of the National Academy of Sciences…
- 19 June 2001
Simple phylogenetic tests were applied to a large data set of nucleotide sequences from two nuclear genes and a region of the mitochondrial genome of Trypanosoma cruzi, the agent of Chagas' disease.… Expand
Microbes on Mountainsides: Contrasting Elevational Patterns of Bacterial and Plant Diversity
Resistance, Resilience, and Redundancy in Microbial Communities
Are We in the Midst of the Sixth Mass Extinction? A View from the World of Amphibians
Evidence for positive selection in the superoxide dismutase (Sod) region of Drosophila melanogaster.
DNA sequence variation in a 1410-bp region including the Cu,Zn Sod locus was examined in 41 homozygous lines of Drosophila melanogaster. Fourteen lines were from Barcelona, Spain, 25 were from… Expand
GENETIC DIFFERENTIATION DURING THE SPECIATION PROCESS IN DROSOPHILA
- F. Ayala, M. Tracey, D. Hedgecock, R. Richmond
- Biology, Medicine
- Evolution; international journal of organic…
- 1 December 1974
Evolution consists of changes in the genetic constitution (gene pool) of populations. The process of evolution may be seen in two ways-which have been called anagenesis and cladogenesis (Rensch,… Expand
A Phylogenetic Perspective on the Distribution of Plant Diversity
Global models of growth and competition.
Very precise data on the dynamics of a competitive system of two species of Drosophila have been obtained. By a curvilinear regression approach, analytical models of competition have been fitted. By… Expand