Scince terms to know

Any preserved evidence of an organism

record of earth history

using the decay of radioactive isotopes to measure the age of rock

method used to date age of rocks by comparing them wit other layers

physical barrier divides one population into two or more populations

structurs that has the same funtional structurs in other organisms

newly evolved featured that you find in fossiles

darwins trem for the selective breeding of organism selected for certain traits in order to produce off spring with traits.

newly evoled features not showen in fossils

shift of a population towards extreme version of a benefical trait

spilts a population in two groups. getting ride of the mean

hereditary change in groups of living organisms over time

measure of the relative contribution an individual trait makes to the next generation

occers when a small sample of population settles in a location separate from the rest of the population

changing the allelis frequency in population

theory that evolution occers in small gradual steps over time

anatomically similar structures inherited from a common ancestor

theory of evolution developed by darwin based on 4 idea.

theory that evolution occers within relativety sudden peorides of specation followed by long period of stability

change in frequence of a trait os based on the ability to atract a mate

most common form of natural selection in which organism with extrem expresion of trait are removed.

speice evolv into other specis without a physical barrier

reduced or uneeded form of a funtional structure in other organism