GEP 1050 section 2 Flashcards
Light and Heavy Varients
the number of neutrons in the atom’s nucleus. O16 vs O18
Photosynthesis-
he way plants make energy, plants chloroplasts is the powerhouse. The equation CO2+H2O= CH2O+O2
Genome
the sum of all genetic materials fertile offspring
Macroevolution
-Large changes through time
-result in changes in the entire genome
-takes place over long time scales
Natural Selection
is an evolutionary process that determines the fitness of adaptations
Bottlenecking event
-a type of natural selection due to an abrupt environmental change
-crash in the Genome.
Taxon (taxa)
a group of related organisms that share biological and behavioral traits
Homologous trait
has a similar form but a different function, indicating an evolutionary relatedness
Analogous trait
different structures yet similar functions, do not indicate a common ancestry.
Homoplastic traits
traits that do not indicate evolutionary relatedness, but they have both a similar form and a similar function
Phylogeny
takes homologous traits passed down through time
Diapsids
ancestors to lepidosaurs and archosaurs
Eons
-Eons -> eras
-we are living through the Phanerozoic
Biomass
is the amount (weight) of organic matter in an environment
GeoChemistry
the chemical composition of geologic materials
Oxygen
oxygen isotopes are really sensitive to evaporation which is a function of precipitation and temperature
Carbon
12C and 13C
CAM are plants that are in more arid places (succulents)
C3 is for the trees c4 is for the corn
Reservoirs
environments where isotopes accumulate and cycle through
Stramadalites
-trace fossils
-Archean Eon
-evidence photosynthesizing prokaryotes
Laminations
layers that are equal to or thinner than one cm
Ripples
wavy undulating layers of sediments that are less than 1 cm thick (usually seen at beaches)
Adaptive radiation
the rapid evolutionary increase of many organisms (taxa) over large geographic or oceanographic areas
Tiktaalik
*critter
*one of the oldest vertebrates we know of
*considered a transitional creature
*first transitional taxa/fossil found
transitional creature
A creature that can function on land or in water
The Permian Triassic Extintion
A mass extinction of life (dino death)
K/Pg mass extinction
Dinos die
Prokaryotic cells
cells that dont have a wall around the nucleus
