Early Earth
What were the conditions of early earth?
very hot (2000F), only a few elements (H, CO2, N, P, S)
What was created on day 6
land animals
humans
what island did Darwin travel to and conduct most of his research
Galapagos
the forearms of a whale, cat, human, and bat are ___ structures
homologous
describe bottleneck effect
when a population declines to a very small number due to a natural event (tornado, fire) and the gene pool is limited to what organisms are left.
according to evolution how was the earth created?
dust particles collided and formed rocks and then larger rocks collided (due to gravitational forces) and formed the earth
How old is the earth (creation)
6-10,000
describe the theory of natural selection
organisms that are best fit to survive will
explain how comparative embryology is an evidence of evolution
vertebrate embryos display homologous structures during early development.
what is directional selection
when the extreme forms of a trait are favored.
relative dating (where they are located in rock strata)
radiometric dating (carbon and uranium dating)
what happened to the dinosaurs according to creation?
died during and after the flood
what book did Darwin write?
On the Origin of Species
the wings of a bird and the wings of an insect are ____ structures
analogous
what is sexual selection
the frequency of a trait is based on the ability to attract a mate
how old is the earth according to evolution
4.5-4.6 billion years old
what books of the Bible (possibly) mentions dinosaurs?
Job and Genesis
individuals in a population differ from one another
variable traits within populations
describe how fossils provide evidence of evolution
fossils reveal similarities between extinct and living species and include some major forms that ahve features linking groups
give an example of a prezygotic barrier
temporal, geographic, mechanical, species
what occured at the KT boundary?
mass extinction- meteor hit earth- killed dinosaurs
name 1 flaw with carbon dating
the ratio of carbon 12 and carbon 14 may not have been the same for (theoretically) billions of years
can only date up to 60,000 years
explain the principle of reproductive advantage in regards to natural selection
some variations allow the organisms that posses them to have more organisms that those who do not posses that trait- therefore passing on that trait to more future offspring
how does biochemistry provide evidence of evolution
complex biochemicals found in diverse species did not evolve independently. therefore indicating a common ancestor
what is adaptive radiation
when one species gives rise to many species in a short time period