Evolution and Natural Selection
Help!
|
|
||||
|---|---|---|---|---|---|
| Evolution | The gradual change in a species over time
🗑
|
||||
| natural selection | A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
🗑
|
||||
| Variation | Any difference between individuals of the same species. Caused by mutations and sexual selection
🗑
|
||||
| Adaptation | inherited characteristic that increases an organism's chance of survival
🗑
|
||||
| competition | the struggle between organisms to survive in a habitat with limited resources
🗑
|
||||
| common ancestor | The shared ancestor of new, different species that arose from one population
🗑
|
||||
| Charles Darwin | scientist who formulated a theory of evolution by natural selection
🗑
|
||||
| selective pressure | when the environment pushes an individual or population to adapt or evolve
🗑
|
||||
| directional selection | occurs when natural selection favors one of the extreme variations of a trait
🗑
|
||||
| stabilizing selection | occurs when natural selection favors the average forms of a trait
🗑
|
||||
| disruptive selection | natural selection in which most organisms are unlikely to survive, regardless of which adaptations they have. Often happens with natural disasters.
🗑
|
||||
| sexual selection | Organisms with certain traits must compete for the attention of a mate.
🗑
|
||||
| Fossils | Preserved remains of once-living organisms. These provide evidence of extinct species and common ancestors of currently living species.
🗑
|
||||
| vestigial structures | A structure that is present in an organism but no longer serves its original purpose. Left over structures from an organism's ancestors.
🗑
|
||||
| Super-germs | Bacteria and viruses that rapidly evolve resistances to modern medicine and antibiotics
🗑
|
||||
| camouflage | An organism that hides by blending in with its environment
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
PRO Teacher
Mr. Helfrich
Popular Biology sets