Excessive inbreeding can be deleterious to a population, resulting in inbreeding depression. Gene flow through metapopulations can be amplified by hybrid vigor, if the hybrid offspring of immigrants and residents have a competitive advantage. In the January 18 Science, Ebert et al. describe experiments that test this theory (Science 2002, 295:485-488).They studied the colonization and extinction dynamics of local populations of the water flea Daphnia magna in rock pools on islands along the Scan
Excessive inbreeding can be deleterious to a population, resulting in inbreeding depression. Gene flow through metapopulations can be amplified by hybrid vigor, if the hybrid offspring of immigrants and residents have a competitive advantage. In the January 18
They studied the colonization and extinction dynamics of local populations of the water flea
Their genotyping results clearly showed that outbred offspring displayed the greatest fitness. Ebert et al. obtained similar ...
In mammals, intracellular clocks begin to tick within days of fertilization.
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