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scientists began to attempt the naming and classifying of all living and fossil
species, it became clear that a more universal system was necessary. An agreed
upon system of naming species was essential for communication among
the two problematic groups can be artificially bred in the laboratory by taking
eggs from the female of one "species" and fertilizing them with sperm from the
male of another "species." Normal development of the hybrid offspring is
justification for ...
such geographic variants were called different species before their true status
was determined. Such geographic races are common in plants as well, but they
are generally called varieties by botanists. The problems presented by these ...
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LibraryThing ReviewUser Review - keylawk - LibraryThing
This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review