Evidences of Evolution Flashcards
This refers to the collection of all fossils.
Fossil Record
These are remnants, impressions, or traces of a specie that has been preserved in the earth’s crust. This is also an evidence of evolution
Fossils
This places a fossil into a sequence of events w/o assigning it a specific age. Lower rock strata are older than higher layers
Relative Dating
This is a type of Absolute Dating that uses radioactive isotopes as a “clock”
Radiometric Dating
This is the time it takes for half of the atoms in a sample radioactive substance to decay
Half-life
This consists of several rigid layers that move in response to forces acting deep within the planet. - Indicates that we were once united.
Tectonic Plates
Shows how isolation led to the independent evolution of different group of mammals that results a distinction with species in different regions.
Biogeographical Locations
These mammals have placentas when they give birth.
Placental
These mammals have pouches
Marsupials
These mammals lay eggs, for example the platypus.
Monotremes
This structure has similarities with organisms that shares a common ancestry
Homologous Structure
This structure has a similar structure and function but doesn’t share the same ancestry
Analogous Structures
This kind of evolution shows that the specie shares a common ancestry but evolved different traits (Arms, wings, legs, flippers)
Divergent Evolution
This kind of evolution shows that the specie doesn’t share a common ancestry but evolved similar traits (Butterfly wings, bat wings, bird wings)
Convergent Evolution
This structure has no apparent function in the specie, though it’s still homologous to a functional organ in another. (Wisdom tooth, appendix, etc.)
Vestigial Structures
Developmental biologists study how the adult body takes shape from its single-celled beginning. Reveals homologies in the structure of the embryonic body.
Embryonic Development
This embryonic development encodes proteins that regulates an organism’s development.
Homeotic Genes
This scans the gene in an organism to a huge database to study homologous genes in other species.
Molecular Comparisons
This is used to predict protein sequences / compare DNA sequences among species to determine evolutionary relationships.
DNA Sequencing
This is info. from homologous protein sequences that can often support fossils and anatomical evidence of evolutionary relationships
Protein Sequencing
