Module 8 Classification Flashcards
- descent through time
- a set of organisms interconnected through time and space
Lineage
groups of the population that are related to one another
species
groups of individuals from the same species
population
- process
- the history of the evolution of a species or group
phylogeny
- hypotheses about the lineages and their evolutionary relationship
cladogram
the change in frequency of an existing gene variant in the population due to random chance
Genetic Drift
the reduction in genomic variability that occurs when a small group of individuals becomes separated from a larger population
Founder Effect
features that have no apparent function
vestigial structure
living fossil
tamilok/shipworm
organisms best suited to their environment to survive and reproduce and thus becoming dominant
“survival of the fittest”
maximum reproductive rate of population
Biotic Potential
assigns every organism a
kingdom, phylum, class, order, family, genus, and species
Linnaean system of classification
names only clades —
groups of organisms that are all descended from a common
ancestor
phylogenetic classification system
needed to breakdown lactose (milk sugar) in the body
Lactase
a condition caused by a genetic mutation that leads to
misshapen red blood cells that look like a crescent or sickle
Sickle - Cell Anemia
. There was a genetic mutation in the ____ that adds ____ (pigmentation) to our eyes that essentially turned the gene off.
OCA2 gene
melanin
Who live at altitudes above 10,000 feet in the Himalayan highlands, and have blood that produces more of the oxygen-transporting hemoglobin protein.
Indigenous Tibetans
used to secrete digestive enzymes that were needed to break-down
our previous diet of cellulose-rich plants.
Appendix
serve no purpose to modern humans, but when we were much
harrier, they probably served the same function that the arrector pili serve in other mammals
Arrector Pili (goose bumps)
