Chapter 11 Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| gene pool | collection of alleles found in all of the individuals of a population
🗑
|
||||
| allele frequency | proportion of one allele, compared with all the other alleles for that trait, in the gene pool
🗑
|
||||
| normal distribution | distribution in a population in which allele frequency is highest near the mean range and decreases progressively toward each extreme end
🗑
|
||||
| microevolution | observable change in the allele frequencies of a population over a few generations
🗑
|
||||
| directional selection | pathway of natural selection in which one uncommon phenotype is selected over a more common phenotype
🗑
|
||||
| stabilizing selection | pathway of natural selection in which intermediate phenotypes are selected over phenotypes at both extremes
🗑
|
||||
| disruptive selection | pathway of natural selection in which two opposite, but equally uncommon, phenotypes are selected over the most common phenotype
🗑
|
||||
| gene flow | physical movement of alleles from one population to another
🗑
|
||||
| genetic drift | change in allele frequencies due to chance alone, occurring most commonly in small populations
🗑
|
||||
| bottleneck effect | genetic drift that results from an event that drastically reduces the size of a population
🗑
|
||||
| founder effect | genetic drift that occurs after a small number of individuals colonize a new area
🗑
|
||||
| sexual selection | selection in which certain traits enhance mating success; traits are, therefore, passed on to offspring
🗑
|
||||
| Hardy-Weinberg equilibrium | condition in which a population's allele frequencies for a given trait do not change from generation to generation
🗑
|
||||
| reproductive isolation | final stage in speciation in which members of isolated populations are no longer able to mate or no longer able to produce viable offspring
🗑
|
||||
| speciation | evolution of two or more species from one ancestral species
🗑
|
||||
| behavioral isolation | isolation between populations due to differences in courtship or mating behavior
🗑
|
||||
| geographic isolation | isolation between populations due to physical barriers
🗑
|
||||
| temporal isolation | isolation between populations due to barriers related to time, such as differences in mating periods or differences in the time of day that individuals are most active
🗑
|
||||
| convergent evolution | evolution toward similar characteristics
🗑
|
||||
| divergent evolution | evolution of one or more closely related species into different species; results from adaptations to different environmental conditions
🗑
|
||||
| coevolution | process in which two or more species evolve in response to changes in each other
🗑
|
||||
| extinction | elimination of a species from Earth
🗑
|
||||
| punctuated equilibrium | theory that states that speciation occurs suddenly and rapidly followed by long periods of very little change
🗑
|
||||
| adaptive radiation | process by which one species evolves and gives rise to many descendant species that occupy different ecological niches
🗑
|
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:
HeilersA21
Popular Biology sets