PORE STRUCTURE AND PERMEABILITY OF CEMENTITIOUS MATERIALS CONTAINING A CARBOXYLIC ACID TYPE HYDROPHOBIC AGENT



Phylogenomic analyses of all species of swordtail fishes (genus Xiphophorus) show that hybridization preceded speciation

Abstract Hybridization has been recognized to play important roles in evolution, however studies of the genetic consequence are still lagging behind in vertebrates due to the lack of appropriate experimental systems.Fish of the genus Xiphophorus are proposed to have evolved with multiple ancient and ongoing hybridization events.They have served as

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