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17 Cards in this Set

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Heritability
the proportion of trait variation due to underlying genetic variation
H2 =
trait change per generation / past trait value
population genetics - what is it and what does it tell us
studies the change in genotypes throughout populations, a measure of the amount of evolution occuring
rate of change
a genotypes ability to make copies of itself
usefulness of H-W
compare to see the degree of evolution that is occuring
genetic drift
changes in allelic frequencies
mutation
changes in DNA
importance of Ne
shows the gene frequencies that are being pasted on which are not immediately apparent by studying the whole populations
principle of allocation
organisms will allocate energy to different life functions depending on the environment
homeostasis
a organism is at a relatively stable internal state under a much wider set of conditions
life history trade-offs
because resources are limiting, an organism must allocate its energy carefully
intrinsic rate of increase
the per capita rate of change in a population
thermoregulation
maintaing optimal body temperature through physiological and behavioral means
poikilotherms
body temp tracks the environments temo
homeotherms
body temp doesn't change
ectotherms
regulates body temp using external heat sources
endotherms
maintain constant temp using internal mechanisms