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science
evaltion
| Question | Answer |
|---|---|
| body parts that are structurally similar in related species and that provided evidence for common ancestors | homologous structures |
| the process of selecting a few organism with desired traits to serve as parents of the next generation | selective breeding |
| three kinds of evidence that support evolution | fossils patterns of early development similar body structure |
| any difference between individuals of the same species | variation |
| They fight against each other in order to survive | competition |
| a process by which individuals that are better adapted to their environment are more likely to survive and reproduce than others of the same species | natural selection |
| the preserved remains or traces of an organism that lived in the past | fossil |
| the gradual change of a species over time | evolution |
| a well tested concept that explains a wide range of observation | scientific theory |
| producing a large amount of off spring because the likely hood of survival is low | overproduction |
| a diagram that shows how scientist think different groups of organisms are related | Branching Tree |
| a behavior or physical characteristic that allows an organism to survive or reproduce in its environment | adaptation |
| Darwin 3 important observation | diversity of living things, remains of ancient organisms, and characteristics of organisms on the galapagos islands |
| 3 forms of evidence that organisms have changed over time | fossils, patterns of early development , and similar body structure |
| 5 ways to determine evolutionary relationships amongst species | DNA,protein structure, fossils, early development, and body structure |
| how did new species form during isolation | they evolved new traits |
| a group of similar organism that can mate with each other and produce fertile offspring | species |
| when a group _______ from the rest of the species a new species can form | separated |
| helps scientist determine the actual age of fossils | radioactive dating |
| the poisson of ______ in petrified rock is the most important when using relative dating | fossil |
| proposes that evolution occurs steadily in tiny changes over long periods of time | gradualism |
| agrees with fossils records that show no intermediate forms for long periods of time | punctuated equlibria |
| refers to similar structures that relate species have inherited from a common ancestor | moligus structure |
| proposes that species evolve during short periods of rapid change | punctuated equlriba |
| minerals replace all or part of an organism and become | petrified fossils |
| this person concludes that organism on the Galapagos island had changed over time | charles darwin |
| through natural selection, _____ variations gradually accumulate in a new species | helpful |
| when some members of a species become isolated, they are ____ likely to form a new species | more |
| an empty space called a _____ is formed when an organisms buried in sediments dissolves | mold |
| in sedimentray rock, the _____ fossils are usually found in the deepest layers | oldest |
| darwin thought that species evolved _______ | overtime |
| organisms belonging to the same _____ can usually mate and produce fertile offspring | species |
| in the process of natural selection, the organism that are best suited to their environment are most likely to survive and ______ | reproduce |
| natural selection is affected by ______, or traits that are different in members of the same species | variation |
| the only traits that can be acted upon by natural selection are those that are controlled by | genes |
| most fossils are found in ____ rock | sedimentary |
| to determine a fossils actual age, scientist analyze _____ elements in rock near the fossils | radioactive |
| the _____ a radioactive element is the time it takes for half of the atoms in a sample to decay | half life |
| the fossil record provides information about species that are ____ or have died out | extinct |
| the forelimbs of a bird and a mammal are examples of ______ structures | homologous |
| a _____ is a well tested concept that explains a wide range of observation | scientific theory |
| ______ dating can be used to determine which of the two fossils is younger and which is older, but not what their actual ages are | relative dating |
| similarities in the early development of chickens and opossums suggest that these animals share a common | ancestor |
Created by:
gabevanhorn