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
week 10 vocab
| Question | Answer |
|---|---|
| species | a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding |
| natural selection | the process whereby organisms better adapted to their environment tend to survive and produce more offspring |
| common ancestor | an ancestor that two or more descendants have in common |
| chemical evolution | evolutionary theory describing formation of organic molecules from inorganic molecules |
| endosymbiotic theory | states that the mitochondria and chloroplasts in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote) |
| symbiotic relationship | a close ecological relationship between the individuals of two (or more) different species |
| varation | refers to an individual that possesses characteristics different from the others of the same kind |
| overproduced | more offspring than can be supported by the environment |
| Descent with modification | the idea that species change over time, give rise to new species, and share a common ancestor |
| gene pool | is the total genetic diversity found within a population or a species |
| genetic diversity | the amount of genetic information within and among individuals of a population, a species, an assemblage, or a community/ |
| bottleneck effect | an extreme example of genetic drift that happens when the size of a population is severely reduced. Events like natural disasters (earthquakes, floods, fires) can decimate a population, killing most individuals and leaving behind a small, random assort |
| founder effect | is the reduction in genetic variation that results when a small subset of a large population is used to establish a new colony |
| gene flow | the introduction of genetic material (by interbreeding) from one population or a species to another |
| genetic drift | refers to random fluctuations in the frequencies of alleles from generation to generation due to chance events |
| divergent evolution | refers to the process by which interbreeding species diverged into two or more evolutionary groups |
| convergent evolution | is the process whereby organisms not closely related, independently evolve similar traits |
| homologous structures | internal structures are similar, but external structures and functions are very different. |
| Analogous structures | unrelated organisms have adapted structures with similar function, but vastly different composition |
| vestigial structure | an organ or appendage that no longer serves a functional purpose |
Created by:
user-1991968
Popular Life Science sets