title: Thermal selection of allozyme polymorphisms in barnacles.
mesh_terms: D000483:Alleles; D000818:Animals; D014644:Genetic Variation; D006579:Heterozygote; D007527:Isoenzymes / Q000378:metabolism*; D011110:Polymorphism, Genetic; D012641:Selection, Genetic; D013696:Temperature; D001468:Thoracica / Q000201:enzymology*
chemical_list: D007527:Isoenzymes