Name____________________________________ Evolution Lecture Notes Part I Evolution is : The H.M.S Beagle In 1831, Darwin set sail from England aboard the H.M.S. Beagle for a voyage around the world. Darwin went ashore and collected plant and animal specimens for his collection. Observations: Many plants and animals were ____________________________________________________ they inhabited. Grasslands in some regions were similar to one another but were inhabited by ____________________________________ ___________: some he collected resembled organisms that were still alive, others looked completely unlike any creature he had ever seen. Galapagos Islands: They were close together but had very _______________________ Characteristics of animals and plants greatly varied among the different islands. Examples of variation on the islands: 1. Finches 2. Tortioses Why did the tort Why did the finches look
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Name____________________________________
Evolution Lecture Notes Part I
Evolution is :
The H.M.S Beagle
In 1831, Darwin set sail from England aboard the H.M.S. Beagle for a voyage around the world.
Darwin went ashore and collected plant and animal specimens for his collection.
Observations:
Many plants and animals were ____________________________________________________ they inhabited.
Grasslands in some regions were similar to one another but were inhabited by ____________________________________
___________: some he collected resembled organisms that were still alive, others looked completely unlike any creature he had ever seen.
Galapagos Islands:
They were close together but had very _______________________ Characteristics of animals and plants greatly varied among the different islands.
Examples of variation on the islands:
1. Finches 2. Tortioses
Why did the tortoises look different?Why did the finches look different?
Darwin was not alone in his theory!
Summary of Lamarck’s Theory:
James Hutton and Charles Lyell:
The world was very religious back then - most people believed the Earth was only a few thousand years old! ___________________________ says that geological processes that we see today MUST be the same
processes that shaped Earth from the beginning. Therefore________________________________________________________
o Rivers carving out canyons, mountain ranges etc.
Thomas Malthus
If the human population grew unchecked, there wouldn’t be enough living space and food for everyone! Forces working against population growth:
o ________o ________o _________
Darwin reasoned that this principal must apply to other organisms too!
o ____________________________________________________________________o Oysters produce millions of eggs every year!
Alfred Wallace
Came up with ______________________________! Toured South America and made similar observations Darwin published his ideas ________, so he is credited with the theory!
Natural Selection
Example # 3: You do
Population of frogs New predator introduced into the jungle
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