Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
What is ecology?
|
The study of interacting groups of organisms and the processes that determine their composition, abundance, rate of turnover, utilization of resources, and distribution.
|
|
Ecological levels of biological organization?
|
Atoms -> Molecules -> Cells -> Tissue > Organ -> Organ system -> Organism -> Species -> Population -> Species -> Community -> Ecosystem
|
|
Much of ecology is based on?
|
The premise of natural selection favoring traits that maximize fitness for individual organisms; the evolutionary basis of evolution.
|
|
Evolution?
|
Change in the genetic composition of a population.
|
|
Genotypes can change between generations. T/F?
|
True
|
|
How does evolution work?
|
Natural selection
|
|
What is natural selection?
|
Evolution resulting from differential abilities of phenotypes to obtain representation in later generations because those phenotypes differentially impact organisms' individual reproduction.
|
|
How is natural selection generally viewed?
|
Viewed as being driven by the environment rather than mate choice or competition for mates.
|
|
Natural selection was founded by?
|
Darwin and Wallace (mid 1800's)
|
|
What is the basis of natural selection? (4)
|
1.) Characteristics are inherited.
2.) Pre-existing, "random" variation in populations (evolution itself not random) 3.) Excess of offspring 4.) Competition for resources |
|
Inherited characteristics that best enable individuals to compete for limited resources will?
|
Increase in frequency in later generations relative to other characteristics.
|
|
The Synthetic Theory of Evolution is a combination of?
|
Darwin and Wallace's ideas and Mendelian genetics
|
|
The big picture of natural selection is? ***
|
1.) Natural selection operated by way of average differential reproductive success, rather than differential survival.
2.) Th fittest are those that leave the most offspring, not those that survive the best. *** |
|
Some traits cause organisms to survive worse but to reproduce better, these traits are favored. T/F?
|
True
|
|
Why is survivorship important evolutionarily?
|
Only if it impacts an organism's lifetime reproductive success/fitness.
|