Final Exam Review Flashcards
batesian mimicry
members of a palatable species gain protection from predation by resembling the defensive signaling of a unpalatable species
mullerian mimicry
two or more species with effective defense share similar appearance or signaling
fundamental niche
the niche that could be occupied without competition
obligate mutualism
symbionts that are completely dependent on each other for survival
dendrites
the structure of the neuron that receives signals from external stimuli
role of the oligodendrocytes in the nervous system
form myelin in the CNS
when threshold potential is reached:
voltage-gated Na+ channels open
what occurs at a chemical synapses
neurotransmitter is released to post-synaptic cell
what is the signal pathway for a reflex arc
PNS (sensory), CNS (spinal cord), PNS (motor)
behaviors that do not require learning and do not vary across the same species are known as
Innate
charles lyell’s influence on darwin was
showed him that the earth was much older than what he had though
what violates the Hardy-Weinberg principle
no non-random mating, small population
which type of selection selects agaisnt the extremes for the mean of the population
stabilizing selection
when one species splits and diverges into two different species
cladogenesis
speciation that occurs due to geographic isolation is
allopatric speciation
speciation that occurs due to sexual selection
sympatric speciation
which era did hominids first appear
cenozoic
which geologic era is the age of dinosaurs
mesozoic
the fimbriae on bacterial cells do what
help bacteria adhere to surfaces
ways that bacteria can increase genetic variation
conjunction, translocation, horizontal gene transfer
sporophytes main stage is
diploid
dominant stage of bryophytes
gametophyte
the gametophyte stage is
haploid
function of the xylem
transport water and minerals from roots to stems and leaves
