Darwin & Natural Selectiom Flashcards
What did Charles Darwin study?
Barnacles and geology of Scotland
What did charles Darwin write
Origin of species
What did Charles darwin breed
Fancy pigeons
What ship was Charles Darwin
Hms beagle for 5 yetas
What is natural selection
Mechanism fit change in populations
Organisms with favorable traits?
Survive
What does environment select
Selects traits that will be passed on greater frequency
4 key points of natural selection
More offspring made then survive
Individuals have variation
Offspring of survivors make up most of the new generation
What is natural selection behind
Evolution
What is evolution
Change in a population organism over generations
What is structural adaptations
A structural adaptation is a structure that makes it easier to survive
Example of structural adaptation
Camoflauge
Are fossils evidence for evolution
Yes
What are homologus structures
Similar structures in different species
What are analogous structures
Body parts that share common function but no evo history
What are vestigial structures
A structure with no purpose
What do nearly all organisms have
DNA, Atp, similar enzymes
What is stabilizing selection
Selection that favors medium phenotype
What is directional selection
Favors one extrem phenotype
What is disruptive selection
Favors either extreme phenotype
What is gradualism
Originate due to gradual changes
What is punctuated equilibriums
Originate in short rapid bursts then long periods
What is adaptive radiation
One species evolves into many different species in habitats
What is divergent evolution
When species that were similar become different
What is convergent evolution
Organisms in different places evolve similar traits due to natural selection
