The active evolutionary lives of echinoderm larvae

Article Abstract:

The evolution of the diverse larval forms of living echinoderms is studied. The study helps in outlining the origins of echinoderm larval forms, their diversity among living echinoderms, molecular clocks and rates of larval evolution and finally existing studies on the roles of developmental regulatory mechanisms in the rapid and radical evolutionary changes observed between closely related congeneric species.

Physiological aspects, Genetic aspects, Growth, Company growth, Echinodermata, Larval development, Echinoderms

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Local adaptation in the rock pocket mouse (Chaetodipus intermedius): Natural selection and phylogenetic history of populations

Article Abstract:

The correlation between phenotypic variation in color and local environmental conditions or with phylogenetic history is investigated. Color variation was found to evolve rapidly over small geographic scales and was strongly correlated with habitat color in most populations while gene flow was found to hinder as well as promote local adaptation.

Color-variation (Biology), Colour variation (Biology), Color variation (Biology)

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Looking for Darwin in all the wrong places: the misguided quest for positive selection at the nucleotide sequence level

Article Abstract:

The article analyzes the emphasis on positive Darwinian selection favoring repeated amino-acid changes at a limited set of sites in a given protein.

United States, Analysis, Major histocompatibility complex, Amino acid sequence, Amino acid sequencing

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