LC. Evolution Flashcards
geological time
Earth is estimated about 4.5 billion years old
radioactive dating
determines age by rate of elements decay
evidence of evolution
fossils, comparative anatomy, Homoglobus structures, Analogous structures, comparative embryology, comparative cytology, comparative biochemistry
comparative anatomy
Homologous structures that suggest many organisms evolved from common ancestor
Homoglobus structures
same structure but different function
-same common ancestor
fossils
remains or traces of organisms that no longer exist
Analogus structures
same function but different structure, no common ancestor example birds or bats
comparative embryology
comparison of early stages of development show similarities that suggest common ancestor
comparative cytology
all living things are made of cells
comparative biochemistry
all living things contain similar bio chemical compounds such as DNA, RNA, proteins
evolution
process of change through time