Unit 9.1 Review Flashcards
Type of Evolution: multiple species from a common ancestor (different beak types adapted for different foods)
Adaptive Radiation
Type of Evolution: unrelated organisms develops similar structures due to similar environmental pressures
Convergent Evolution
Type of Evolution: populations isolated from one another develop different traits (may lead to new species)
Divergent Evolution
What proposes that evolution and change occurs due to small, continuous changes over time?
Gradualism
What states that change occurs in starts and fits (periods of rapid change followed by stability)?
Punctuated Equilibrium
What is paleontology?
the study of fossils
What is…the study of external and internal structures of an organism?
anatomy
What is…the study of early growth and development of embryos?
embryology
What is Molecular Biology?
DNA, RNA, proteins
What is…fossils are found in rock layers called strata?
Relative Dating
What is…method using radioactive carbon to find the age of an object?
Radiocarbon Dating
What structure: body parts that have the same structural organization (tissues) and function in two different species (show evidence of a common ancestor)
Homologous Structure
What structure: body parts that don’t have the same structural organization (tissues) in two different species, but they do have the same function (no common ancestor but they typically live in similar enviroments)
Analogous Structure
What structure: body parts that have shrunk over time because a species has evolved to not need or use them as much anymore (human appendix, human tailbone)
Vestigial Structure
What is…if two species are related, they are likely to show similar developments in their early stages of life?
embryology
