Term
|
Definition
| combined genetic information of all the members of a particular population |
|
|
Term
|
Definition
| number of times an allele occurs in a gene pool compared with the number of times other alleles occur |
|
|
Term
|
Definition
| trait controlled by a single gene that has two alleles |
|
|
Term
|
Definition
| trait contolled by two or more genes |
|
|
Term
|
Definition
| form of natural selection in which a single curve splits into two; occurs when individuals at one end of a distribution curve have higher fitness than the individuals in the middle or at the other end of the curve |
|
|
Term
|
Definition
| form of natural selection by which the center of the curve remains in its current position; occurs when individuals near the center of a distribution curve have higher fitness than individuals at either end |
|
|
Term
|
Definition
| form of natural selection in which a single curve splits into two; occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals near the middle |
|
|
Term
|
Definition
| random change in allele frequencies that occurs in small populations |
|
|
Term
|
Definition
| change in allel frequencies as a result of the migration of a samll subgroup of a population |
|
|
Term
|
Definition
| principle that allele frequencies in a population will remain constantunless one or more factors cause the frequencies to change |
|
|
Term
|
Definition
| situation in which allele frequencies remain constant |
|
|
Term
|
Definition
|
|
Term
|
Definition
| seperation of species or populations so that they cannot interbreed and produce fertile offspring |
|
|
Term
|
Definition
| form of reproductive isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding |
|
|
Term
|
Definition
| form of reproductive isolation in which two populations are seperated physicallly by geographic barriers |
|
|
Term
|
Definition
| form of reproductive isolation in which two populations reproduce at different times |
|
|
