E3 - Darwin and His Finches(1) Flashcards
What did Darwin do during his voyage on the begale
-Darwin’s job on the Beagle was to observe, record and collect specimens of rocks, minerals, plants and animals
what was Darwins most famous observation?
made in the Galapagos islands
-struck by the unusual and unique flora and fauna including…
The nesting boobies with no fear of humans
Iguanas that could dive underwater to eat seaweed
Giant land tortoise
What did Darwin learn on the island?
he learned later was that there were not variations of the same species but each were unique species!
The most famous example of this observation was Darwin’s Finches!
What do you think caused the changes in finch population and average beak size during the period of abundant rain?
smaller beaks thrived so population increased
B. What might happen to the finch populations after millions of years?
If very dry= bigger beaks
if rain= small beaks