BIO 115
Human evolution
Human evolution
Set of flashcards Details
Flashcards | 288 |
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Language | English |
Category | Biology |
Level | University |
Created / Updated | 23.01.2021 / 24.01.2021 |
Licencing | Not defined |
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Definition: Evolution
- Change in the properties/traits of organsims over the course of generations -> passed via genetic material from one to the next generation (evolutionary changes)
- Several populations derived from common ancestor
Definition: Ontogeny
- Development of new organisms (IS NOT EVOLUTION)
Examples: Natural selection/evolution
- Antibiotic resistance -> same bacteria from the 50s are back but resistant to antibiotics
- HIV -> two sources from same ancestor with different traits (HIV1 from chimpanzees and HIV2 from Sooty mangabey)
- Senescence -> natural ageing process
- Model organisms -> mice, drosophila etc.
Evolution Theories: Plato
- Eidos: supernatural ideal imperfectly imitated by humans
- Variation is accidental imperfection
- Species have fixed properties
Evolution Theories: Christians
- Species created by God in similar form as tody
- God's creation follows a plan
- Great chain of being: angels >humans > higher form of life > invertebrates > plants > barely animate forms of life > inanimate objects
Evolution Theories: Caraolus Linnaeus
- Systema naturae -> classification of animals and plants
- Science was to catalogue God's creation
- Related species -> genera
- Similarities -> populations as one group
Evolution Theories: Lamarck
- Theory of organic progression -> Transformation of species
- First coherent theory of evolution
- Species originate out of nothing -> spontaneous creation
- Lamarckism -> Inheritance of acquired characteristics
- Species differ because of different needs -> nervous fluid in organs triggers growth e.g. neck of giraffes
Evolution Theories: Charles Darwin
- Variational evolution
- Explorer ship -> mocking birds are diffrent on different islands
- Different lineages from single ancestor
- Evolution is not goal-oriented