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Biology 114 Midterm 1
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73
Biology
Undergraduate 1
04/18/2012

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Term
Science
Definition
the unbiased interpretation of representative data
Term
Birth control
Definition
less effective when taking antibiotics
Term
Evolution
Definition
descent with modification
Term
Teosinte
Definition
ancestor of sweet corn, which was domesticated by humans
Term
Canis lupus familiaris
Definition
dog scientific name
Term
saluki
Definition
perhaps the fastest breed of dog
Term
Artificial selection
Definition
the process of intentionally breeding for specific traits
Term
Artifactual selection
Definition
the unintended consequences of artificial selection
Term
Domestication
Definition
selective pressures practiced by agrarian farmers for the last 10,000 years—descent with modification
Term
Carolus Linnaeus
Definition
taxonomist who invented the nested hierarchy
Term
James Hutton
Definition
geologist
Term
Georges Cuvier
Definition
paleontologist
Term
Malthus
Definition
economist who theorized that resources are limited, so populations are limited—keeps populations relatively stable
Term
Domain Kingdom Phylum Class Order Family Genus Species
Definition
Order of nested hierarchy (largest to smallest)
Term
theory
Definition
the culmination of many tested and accepted hypotheses that support one another and together form one idea
Term
falsifiable
Definition
meaning that evidence can potentially undermine a theory
Term
Alfred Wallace
Definition
scientist who also essentially came up with evolution at the same time Darwin did
Term
genetic drift
Definition
chance effects alter the genetic composition of a small population over time
Term
bottle neck
Definition
when a large population loses many individuals; fewer individuals—smaller population is less able to react to changes
Term
founder effect
Definition
the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population
Term
Wardenburg syndrome
Definition
causes deafness, as well as differently colored pupils and a white band in the hair
Term
ancillary traits
Definition
subordinate trait expressed by a gene that has greater impact elsewhere
Term
pleiotropy
Definition
the condition of a single gene controlling more than one (possibly unrelated) phenotypic traits
Term
Strategy
Definition
the traits manifested by organisms that contribute to their survival and reproduction--agents of this are mindless and mutations occur by random chance
Term
4.6 BYA
Definition
how long ago earth was formed
Term
1 MYA
Definition
time after beginning of earth that life appeared
Term
cell
Definition
smallest unit of life
Term
radioisotopes
Definition
effective method of dating--nothing effects it but time
Term
genetic mutations
Definition
the only source of brand new alleles
Term
Stanley Miller
Definition
scientist who imitated the early components of life--made over 20 organic molecules
Term
Microevolution
Definition
the evolutionary process below the level of the species
Term
Macroevolution
Definition
evolutionary processes at the species level and above
Term
Macroevolution
Definition
evolutionary processes at the species level and above
Term
Fitness
Definition
number of offspring that an individual contributes to the next generation relative to the contribution of other member of the population
Term
niche
Definition
the multidimensional “place” that a species occupies in the ecological “landscape"--encompasses everything
Term
Phylum
Definition
characterization by tissue layers body cavities, and symmetry
Term
1.3 million species
Definition
number of species in Kingdom Animalia
Term
35
Definition
number of current phyla
Term
choanoflagellate
Definition
ancestor of these sponges is theorized to be the "common ancestor" of all animals
Term
baculovirus
Definition
virus that infects gypsy moth caterpillars--makes them go high above ground then melt onto leaves below after death
Term
470 MYA
Definition
fungal spores date to when?
Term
360 MYA
Definition
origin of seeds
Term
150 MYA
Definition
origin of flowers and fruits
Term
• Non-vascular plants
• Seedless vascular plants
• Gymnosperms
• Angiosperms (flowering plants)
Definition
Four Major Groups of Plants
Term
endosymbiosis
Definition
when a eukaryote “engulfs” a cyanobacterium and can now also photosynthesize
Term
protist
Definition
algae are what?
Term
protist
Definition
anything that is not an animal, plant, or fungus
Term
lichens
Definition
a symbiosis of fungi and (green) algae (leaf-like, shrub, crust)
Term
100,000 species
Definition
number of fungi species described
Term
1.5 million species
Definition
assumed number of fungi species
Term
o Chytrids
o Zygomycetes
o Glomeromycetes
o Ascomycetes
o Basidiomycetes
Definition
five phyla of fungi
Term
Hyphae
Definition
tiny filaments of fungi that form a network underground and a “body” above
Term
Mycelium
Definition
the interwoven network or hyphae underground or in a substrate
Term
Sporulation
Definition
the release of spores
Term
corn smut
Definition
treated as a pest by American farmers, delicacy in Mexico
Term
Saccharomyces Cerevisiae
Definition
yeast (single-celled fungus) responsible for beer, wine, and food
Term
candida albicans
Definition
yeast responsible for vaginal yeast infections
Term
Cambrian Ordovician Silurian Devonian Carboniferous Permian
Definition
periods within the paleozoic era, in order from oldest to newest
Term
Triassic Jurassic Cretaceous
Definition
periods within the mesozoic era, in order from oldest to newest
Term
290,000
Definition
present number of species of land plants
Term
don’t have roots or true leaves (require moisture)
Definition
quality of nonvascular plants
Term
Apical meristems
Definition
land plants grow from top
Term
50,000,000
Definition
how long mosses "ruled" for
Term
vascularity
Definition
93% of all plants have this
Term
Entomorphogy
Definition
the eating of insects as food
Term
Sori
Definition
holds sporangia that release fern spores
Term
Cordyceps
Definition
Forms in ant’s brain—kills victim--forms spores after ant’s death—extremely virulent
Term
dispersal
Definition
method of plant movement
Term
Archaeopteryx
Definition
reptilian bird fossil—birds are now considered “avian reptiles”
Term
monophyly
Definition
all coming from one ancestor
Term
evolutionary convergence
Definition
sharks, dolphins, penguins, seals, and whales: all respond to water density by having fusiform body shape--example of what?
Term
Homology
Definition
similarity that results from common ancestor
Term
Analogy
Definition
when similarity results from evolutionary convergence
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