Term
|
Definition
| change in a population of organisms over time due to natural selection |
|
|
Term
|
Definition
| When nature kills off organisms less fit, so more fit organisms leave more offspring |
|
|
Term
|
Definition
a genetic change that makes survival easier, such as wings or fur;
the process of changing to become more fit |
|
|
Term
|
Definition
| small, genetic differences between members of a population |
|
|
Term
|
Definition
| a synonym for natural selection; better-adapted organisms leave more offspring |
|
|
Term
|
Definition
| Description of the difficulty of living in the wild; most organisms that are born die before reproductive age |
|
|
Term
|
Definition
| Naturalist who first proposed the theory of evolution in 1859 |
|
|
Term
|
Definition
| the number of deaths in a population per year |
|
|
Term
|
Definition
| the number of organisms that are born per year in a population |
|
|
Term
|
Definition
| Organisms of the same species living in the same place so that they can mate with each other |
|
|
Term
|
Definition
| the total of all of the genes in a population; any offspring born in the population can only have a set of these genes |
|
|
Term
|
Definition
| S-shaped curve that shows how a population grows when limited by a carrying capacity |
|
|
Term
|
Definition
| A J-shaped curve which shows how a population grows when not limited by a carrying capacity; each generation is much bigger than the last |
|
|
Term
|
Definition
| The limit to how many organisms a population can have based on the amount of food, living space and competition; at the carrying capacity, the death rate and birth rate are equal |
|
|
Term
|
Definition
| When many different organisms are after the same sets of resources, such as food or living space. Having a lot causes a high death rate. |
|
|
Term
|
Definition
| When farmers, breeders or scientists choose traits that make organisms more useful or valuable; mimics evolution |
|
|
Term
|
Definition
| Experiments with this species show how dogs might have been domesticated from wolves. |
|
|
Term
|
Definition
| A type of organism that can only reproduce with others of the same type. |
|
|
Term
[image]
Carrying Capacity |
|
Definition
|
|
Term
|
Definition
[image]
Birth Rate > Death Rate |
|
|
Term
|
Definition
[image]
Where the DR starts to rise |
|
|
Term
[image]
exponential growth |
|
Definition
[image]
type of growth shown here |
|
|
Term
|
Definition
| Show how differences in environment on the Galapagos Islands lead to beak changes (species changes) |
|
|
