10Sip evolution Flashcards
Fossils
preserved evidence in rocks or soils of organism that once existed on earth
paleontology
study of past 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 animals in order to understand changes
E.g. human bout
radius ulna humerus
phalanges
what does evolution refer to in biology
the process by which living species have diversified since the origin of life on earth
definition of evolution
the process by which different Kuols of living organisms have developed
evidence of evolution
fossils
comparature anatomy
genes
geography
embryology
homologous structures
same basic structure controlled by particular inherited genes E.g. foot bones horse similar
analogous structures
not all structures are homologous. some are similar but different genes involved E.g. shark’s, dolphins (fins/ body shape)