Test 7 Flashcards
define evolution
It includes the origin as well as the spread of alleles, variants, trait values, or character states.
Define species
A class of organisms of the same kind and same name
What is Insecticide resistance?
insects can survive insecticide bc they evolve adaptations to it and don’t die
What is MRSA?
Also developed so it can’t be treated by certain medicines as it could it the past
How did the Bajau ppl experience evolution?
developed large spleens to free dive for a long time
How did the Andes ppl experience evolution?
adapted to the thin air by developing an ability to carry more oxygen in each red blood cell.
How did the Himalayan ppl experience evolution?
They have higher blood flow and dilated blood vessels because they have adjusted to the high altitudes of the Himalayan mountains
Why do the Galapagos islands have so many diverse animals?
Galapagos islands are very diverse in their animals and the land, it is home to many types of habitats and that is why it’s so diverse.
What did James Hutton propose?
believed the earth has been slowly shaped by geological processes over long periods and that the earth must be millions of years old. Rocks and mountains are shaped by wind, rain, heat, and cold.
What did James Lyell propose?
believed geological processes that shaped the earth over long periods of time so he thought life did the same thing.
What evidence proves the evolutionary theory?
Fossil record
Homoglous body structures
Early embryonic development
Genetics and molecular biology
Biogeography
What is a vestigial organ and example?
Not needed bc they don’t serve important functions for humans anymore
We still have them bc these vestigial organs don’t affect our physical health/fitness so they were never eliminated in natural selection.
EX: tonsils, wisdom teeth, and appendix
Def convergent evolution and example
When species live on different continents and come from different ancestors but live in similar environments and are exposed to similar pressures of natural selection.
EX: sugar glider (Australia) and the flying squirrel (North America)
Def divergent evolution and example
When 2 or more related species or populations become more and more NOT similar (dissimilar) over time bc of living habitats/environment.
EX: Horse and zebra or capybara and beaver
Describe the 5 steps on how the finches distributed through common ancestry to many different species.
Founders arrive
Geographic isolation
Changes in gene pools
Behavioral isolation
Competition and continued evolution
