BIO Lab Test 1 Flashcards
survivorship rate (S)
fraction of individuals that survive selection
S = survivors/total
relative fitness (w)
measure of a phenotype’s fitness relative to the most fit phenotype
w = S/Shighest
selection coefficient (s)
selection against a phenotype relative to the most successful phenotype
* s=1 means complete selection against
* s=0 means there is no selection against
s = 1-w
Carolus Linneaus
- created the system of classifying organisms is what we know as the Hierarchical Classification System
- popularized binomial nomenclature
Do Kings Play Chess On Fuzzy Green Squares?
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
phylogenetic tree
a diagram that summarizes the evolutionary history of a group of organisms
which type of data is best for phylogenetics?
both molecular and morphological data help
node
represents a common ancestor
clade
a group of organisms that includes a common ancestor and all descendants of that ancestor
convergent evolution
when two species that have already diverged develop the same trait b/c they have similar environmental factors
synapomorphy
a trait shared by species that share a common ancestor
Central Dogma
DNA - RNA - protein
silent mutation
DNA change that doesn’t change the amino acid coded for
missense mutation
DNA change that alters the amino acid coded for
niche
the role of an organism in an ecosystem
competitive exclusion
when only one species can be supported by the competed-over resources
niche partitioning
when two species can occupy a niche together because each specializes in different resources
adaptive radiation
rapid diversification of species to adapt to new ecological niches
ecomorph
animals with a morphology adapted to a particular environment
* species that inhabit similar niches can by grouped together in ecomorphs
