GES103_Mod1 Lec1

GES103_Mod1 Lec1 - GES 103 Module 2 - Lecture #1 Chapter 15...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
GES 103 Module 2 - Lecture #1 Chapter 15 + 18 Charles Darwin : 1. Published "Origin of Species" in 1859 2. One of the most influential books ever written about science 3. Single theory that unifies all of biology Darwin first thought of evolution after his first trip on the Beagle (1837-1838). Originally he assumed that all of the Galapagos finches were one species, but when he got home and separated them, he noticed that each island had a distinct species. He then began to try to explain why species woul d change and could come up with one plausible explanation, which was ADAPTATION . Adaptation could explain both why species change and why they are designed the way they are. He concluded that forms that were better adapted for survival will leave more offspring. They are able to produce more viable offspring, and thus their genes make up a larger
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
portion of the genes in the next generation. Simply put, NATURAL SELECTION = DIFFERENTIAL REPRODUCTION If something in the environment changes, then any trait in a population that allows for more reproductive success will be selected for. The new form is better adapted to the environment and increase in frequency. Eventually through EVOLUTION new species would form. EVOLUTION = genetic change in a population over time Alfred Russel Wallace had also come to this conclusion independently. Everyone had agreed on the theory of evolution, but not how
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

GES103_Mod1 Lec1 - GES 103 Module 2 - Lecture #1 Chapter 15...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online