Intro Flashcards
1
Q
Evolution
A
- unifying concept in biology
- decent with modification
- needed to understand the big pic
2
Q
proximate causation
A
short term, the now, nuts and bults (manufacturing)
3
Q
ultimate causation
A
why something exists the way it does in the first place (function)
4
Q
sexual selection
A
- 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
Q
microevolution
A
- generation to generation changes
- processes observed today
- ex: why species change
6
Q
macroevolution
A
- long term changes above the species level
- reconstruct historical patterns over long time scales
- ex: history of life on earth
7
Q
diversification
A
cumulative changes in traits of organisms, which sometimes can lead to new species
8
Q
Mutation
A
- error in DNA replication or other alteration of genome
- ultimate source of genetic variation
9
Q
macromutations
A
- deletion, duplication, translocation, inversion, and fusion
- change in chromosome or gene #(gene families)
10
Q
point mutation
A
-a single base change
11
Q
average rate of mutation
probability of mutation
A
genesXmutation rate
12
Q
stochastically
A
random
13
Q
deterministicly
A
non random
14
Q
recombination
A
- short term source of genetic variation in a sexual population
- shuffles genes into new combos
- then can be acted upon by natural selection
