fossils Flashcards
fossils
preserved evidence in rocks or soils of organisms that once existed on earth
palaeontolgy
study of part life especially fossils
what are fossils
hard objects such as skeletons shells teeth and wood
oldest fossils
found in the oldest rocks at depth
comparative anatomy
study of body structure of different species of animal on order to understand change. eg human bat raduis ulna humeru phalanges
what does evolution refer to in biology
the process by which living species have diversified since the origan of life on earth
definition of evolution
the process by which different kinds of living organisms have developed
evidence of evolution
fossils
comparative anatomy
genes
geography
embryology
homologous structures
some basic structures controlled by particular inherited genes. eg foot bones horse simliar.
analogous structures
not all structures are homologous. some are similar but different genes involved. eg sharks dolphins (fin body shape)