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Molecular trans-species polymorphism

Article Abstract:

Trans-species polymorphism (TSP), which makes phylogenetic analysis more complicated, is occurrence of similar alleles in related species. TSP is the result of the passage of alleles from ancestral species to to descendant ones, with the exception of those for which the similarity came about by convergent evolution. Long-standing TSPs show up only in genetic systems that evolve under balancing selection. Two such systems have been studied extensively. TSP, despite the challenges it presents, is a useful tool for speciation study.

Germany, Plants, Observations, Mutation (Biology), Mutation, Polymorphism (Zoology), Self-incompatibility (Botany)

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Evolutionary genetics of life cycles

Article Abstract:

Genetic processes involved in cellular species life cycles complicate the selection of a single evolutionary hypothesis. Many life cycles transmit only one genome from parent to offspring, permitting selection to independently evaluate different alleles. This process, in conjunction with interorganismal gene exchange, generates complexities not addressed by any one hypothesis.

Evolution (Biology), Evolution, Life cycles (Biology), Unicellular organisms

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Molecular population genetics of social insects

Article Abstract:

Workers of certain insect populations can strategically manipulate reproductive outcomes according to data they receive on their colonies. Studies of bees, ants and wasps show that genetic heterogeneity data are used by workers to maintain genetic integrity through the queens and regulate mating flights to determine spatially differentiated speciation.

Research, Population genetics, Molecular genetics, Insect societies

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