Allozyme variation and structure of the Canarian endemic palm tree Phoenix canariensis (Arecaceae): implications for conservation

Article Abstract:

The electrophoretic analysis of 18 allozyme loci was used to estimate the levels and structuring of genetic variation within and among natural populations of the protected endemic palm species from the Canary Islands. It is used to evaluate its relationship with the widespread congener P. dactylifera, and to assess comparatively the genetic variation in the populations where the two species coexist with morphologically intermediate plants.

Electrophoresis, Palms, Palms (Plants)

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Genetic Correlations, Tradeoffs and Environmental Variation

Article Abstract:

The evidence for the shifts by focusing on experiments that have examined genetic correlations in more than one environment is reviewed. Queries are raised about the validity of deducing genetic constraints from studies in one environment and suggest that the interaction between environment conditions and the expression of genetic covariation is an important avenue for future work.

Gene expression

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Geographic variation in the G matrices of wild populations of the barn swallow

Article Abstract:

The genetic variations of three wild populations of the barn swallows are examined. Estimates are done of the P, E and G matrices for six linear morphological measurements, and the significant variations among the populations in the G matrices appears to be due in large measure to the most geographically distant population.

Wildlife

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