AP Bio Chapter 20/21: Phylogeny & Evolution of Populations
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Phylogeny | The evolutionary history of a species or group of related species.
🗑
|
||||
| Phylogenetic tree | A branching diagram that represents a hypothesis about the evolutionary history of a group of organisms.
🗑
|
||||
| Shared derived characters | An evolutionary novelty that is unique to a particular clade (represented by a speciation event that occurs at a node).
🗑
|
||||
| Maximum parsimony | A principle that states that when considering multiple explanations for an observation, one should first investigate the simplest explanation that is consistent with the facts.
🗑
|
||||
| horizontal gene transfer | The transfer of genes from one genome to another through mechanisms such as transposable elements
🗑
|
||||
| population | A group of individuals of the same species that live in the same area and interbreed
🗑
|
||||
| Hardy-Weinberg equilibrium | The state of a population in which frequencies of alleles and genotypes remain constant from generation to generation
🗑
|
||||
| genetic drift | A process in which chance events cause unpredictable fluctuations in allele frequencies from one generation to the next. Effects of genetic drift are most pronounced in small populations.
🗑
|
||||
| founder effect | Genetic drift that occurs when a few individuals become isolated from a larger population and form a new population whose gene pool composition is not reflection of that of the original population.
🗑
|
||||
| bottleneck effect | Genetic drift that occurs when the size of a population is reduced
🗑
|
||||
| gene flow | The transfer of alleles from one population to another
🗑
|
||||
| relative fitness | The contribution an individual makes to the gene pool of the next generation
🗑
|
||||
| sexual selection | A process in which individuals with certain inherited characteristics are more likely than other individuals of the same sex to obtain mates.
🗑
|
||||
| Directional Selection | Natural selection in which individuals at one end of the phenotypic range survive or reproduce more successfully than do other individuals.
🗑
|
||||
| Disruptive selection | Natural selection in which individuals on both extremes of a phenotypic range survive or reproduce more successfully than do individuals with intermediate phenotypes.
🗑
|
||||
| Stabilizing Selection | Natural selection in which intermediate phenotypes survive or reproduce more successfully than do extreme phenotypes.
🗑
|
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:
Hajra Maqsoos
Popular Biology sets