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Title: Evolution Glossary
Description: Definition of important evolutionary terms and a description on ratites
Description: Definition of important evolutionary terms and a description on ratites
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Evolution Glossary
Homologous= Structures with common origin, but
different function
...
Vestigial= Rudimentary, undeveloped, no value
Bergmann’s Rule= within a species, body mass
increases with latitude and colder climate
...
Gloger’s Rule= More heavily pigmented forms found in more
humid environments
...
Mutation= Nucleotide sequence changes
...
Deleterious
mutations reduced by natural selection
...
Adaptation= Change in structure/function that makes an
animal better suited, biologically and culturally
...
Adaptive Radiation= Short term process, adjusting to changes in environment in one lifetime
...
Convergent evolution Speciation= Development of similar structures in organisms not directly related
...
Ratites
Any bird whose sternum (breastbone) is smooth, or raftlike, because it lacks a
keel to which flight muscles could be anchored
...
They are a peculiar and puzzling group, with anatomic anomalies
...
Extant ratites include
the ostrich, emu, cassowary, rhea, and kiwi
Title: Evolution Glossary
Description: Definition of important evolutionary terms and a description on ratites
Description: Definition of important evolutionary terms and a description on ratites