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Flashcards in Intro Deck (14)
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1

Evolution

-unifying concept in biology
-decent with modification
-needed to understand the big pic

2

proximate causation

short term, the now, nuts and bults (manufacturing)

3

ultimate causation

why something exists the way it does in the first place (function)

4

sexual selection

-form of natural selection
-arises form heritable differences in the ability to find a mate with members of the opposite sex
-explains monomorphic and reverse sexual dimorphism

5

microevolution

-generation to generation changes
-processes observed today
-ex: why species change

6

macroevolution

-long term changes above the species level
-reconstruct historical patterns over long time scales
-ex: history of life on earth

7

diversification

cumulative changes in traits of organisms, which sometimes can lead to new species

8

Mutation

-error in DNA replication or other alteration of genome
-ultimate source of genetic variation

9

macromutations

-deletion, duplication, translocation, inversion, and fusion
-change in chromosome or gene #(gene families)

10

point mutation

-a single base change

11

average rate of mutation
probability of mutation

genesXmutation rate

12

stochastically

random

13

deterministicly

non random

14

recombination

-short term source of genetic variation in a sexual population
-shuffles genes into new combos
-then can be acted upon by natural selection