Caleb Armock - Unit #5: Evolution Flashcards
Define evolution.
change in the characteristics of organisms or populations over many generations
Who was responsible for adopting the theory of evolution?
Charles Darwin
Describe the Galapagos Islands (why is life there so diverse?)
They are a diverse set of islands because of geographic isolation.
Why were Darwin’s ideas so controversial at the time
it implied that life had developed due to natural processes rather than as the creation of a loving God
What did James Hutton propose?
Earth has been slowly shaped by geologic processes.
What did Charles Lyell propose?
the process is still happening today,
How did the above scientists help shape Darwin’s theory?
he thought if the earth could change over time why couldn’t life.
Describe AND give an example of each of Jean Baptiste Lamarck’s 3 hypotheses about how and why organisms evolve.
use and disuse. inheritance of acquired traits. tendency toward perfection.
Why do we study Lamarck’s ideas if they are flawed?
put evolution on the map and with acknowledging that the environment plays a role in shaping the species
Describe struggle for existence.
there is natural selection and competition inorder to survive.
Briefly describe what natural selection is.
populations change over time because inherited traits good for their environment leave more offsprings than less suited ones.
Other than direct observation, what are other pieces of evidence supporting evolution?
the fossil record.
what are homologous structures? Give an example.
Different but related organisms that share basic structures. vestigial organs.
What are analogous structures? Give an example.
body parts that share functions but don’t share structure and development.
What are vestigial organs? Give 3 examples
organs that lose their function over time. wisdom teeth, coccyx, appendix.
