Lecture 2 Flashcards
(28 cards)
Biological species concept -
Individuals of the species reproduce & create viable off spring
What is a weakness to biological concept?
Asexual beings
Morphological /Typological concept
Considered same species because they look alike
Evolutionary/Genetic concept
Share large portion of DNA structure ( strongest concept)
Change in form & behavior of organisms overtime
Evolution
Limits of Evolutionary/Genetic
Expensive to do & hard to do when data is limited
Microevolution
Change on genetic scale specifically
Macroevolutionary
Change in species scale over years
Creationism
religious beliefs; counter point to evolution
George Cuvier created what?
Catatrophism
What is catatrophism ?
acknowledges extinction but not change
Who is Jean lamark ?
inheritance of acquired characteristics (He acknowledged change no extinction)
Who is the creator of Acquired characteristics ?
Jean Lamarck
what are the acquired characteristics ?
1-exact characteristics gradulated overtime
2-increasing complexity overtime within same species
3-no extinction
What was Lamarck’s Giraffe Theory about ?
Transmission of exact characteristics overtime
What is Biogeography?
The study of patterns in the geographic distribution species
Fossils
evidence of earlier forms of life
Extant
still exist
Extinct
doesn’t exist
What importance of Darwin’s Voyage?
led him to study numerous species of finches and natural selection
What improves survival and reproductive capacity? (3 categories of adaption)
morphological, physiological,and behavioral
What layer are fossils commonly found?
in sedimentary rock
Endemic?
species found in one area only
Pangaea?
continents all connected
