Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
science test 3/24/17
| Term | Definition |
|---|---|
| species | a group of organisms that share similar characteristics |
| species | can reproduce among themselves and produce fertile offspring |
| evolution | changes inherited characteristics over time |
| Darwin | studied finches on Galapagos island, found they were all similar to one type of finch |
| Darwin | believed the finches changed as they complete for food |
| natural selection | organisms with traits best suited for the environment survive and reproduce traits are passed down on to offspring. |
| natural selection | unfavorable traits die off with offspring that do not survive |
| variation | inherited trait that makes an individual different from other members of its species |
| variation | can come from mutations |
| variation | beneficial mutations are more likely to be passed on due to natural selection |
| variation | changes in species can take a long time to appear when members of same species move into or out of area |
| variation | if small number of individuals are isolated from other variation may appear in one population that are not present in the other |
| variation | populations can become so different due to this that they become 2 different species and can no longer breed |
| adaptation | variation that increases an organism's chance for survival |
| gradualism | slow process where one species changes into another |
| punctuated equilibrium | rapid evolution occurs when individuals mutate and pass on those mutations/traits |
| punctuated equilibrium | when bacteria become resistant to antibiotics this is happening |
| fossil | remains or traces of once living organism |
| fossil | usually found in sedimentary rock |
| imprint | carbon that is left after organisms decay; can harden to rock |
| cast | sediments fill cavity left by decaying organisms |
| mold | impression of the shape or track of an organism |
| relative dating | an estimate about the age of the fossil based on the location in the rock - older fossil are father down in rock |
| radiometric Dating | amount of time it takes for 1/2 of radioactive material to decay |
| radiometric Dating | radioactive material is unstable and decays at set rate |
| radiometric Dating | more accurate for determining fossil age |
| embryonic structures | early in development human embryos and other vertebrate embryos look similar. Used to link species |
| vestigial structures | a part that functions in one organism but does not function in another. show common ancestor. i.e) tailbone |
| homologous structures | structures that are developmentally similar but have different functions. Shows common ancestor |
| Primates | -opposable thumbs-grab objects -binocular vision- judge distance -flexible shoulders that rotate- more range of motion |
Created by:
faithrinrhart
Popular Science sets