Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Title: Evolution
Description: These notes go over the history of evolution, the concept of evolution, the mechanisms of evolution, evidence for evolution, and human evolution. These notes were taken for an introductory college biology course.
Description: These notes go over the history of evolution, the concept of evolution, the mechanisms of evolution, evidence for evolution, and human evolution. These notes were taken for an introductory college biology course.
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
Evolution
•
•
•
•
Populations
o A population is a group of individuals that belong to the same species, live in the
same area, and interact with one another
o In a given population, none of the individuals will be genetically identical
o Some individuals will have different alleles at certain genes
o Example
▪ 15 individual oysters, either blue, red, or green
▪ Color is controlled by one gene, and the color is determine by possessing
one of three different alleles
• 1/3 have blue, 1/3 have red, and 1/3 have green
• However, frequencies are not exactly constant
• Random fluctuation, gene flow, better camouflage
An allele is an alternative form of the same gene
o Different alleles give different phenotypes
Evolution is the process of organismal change over time with genetic modification
o Changes can be small (microevolution), involving a change in a population's allele
frequencies over a few generations
o Over time, micro-evolutionary changes build up, leading to larger differences
between organisms on larger time scales (macroevolution)
o Evolution has produced the diversity of life on earth (~8
...
e
...
e
...
e
...
e
...
e
...
4 million years ago
▪ Brain enlargement, ate meat, and used stone tools
o Homo erectus
▪ 1
...
5
billion years old
▪ Intelligent design
• Rejection of evolution but not as religious --> creation science
▪ Is creationism/intelligent design a valid, scientific alternative to evolution?
• Science must be falsifiable and testable
• You cannot test for the existence of anything supernatural
▪ You do not have to be an atheist to believe in evolution!
Evolution
•
•
Because the existence of God cannot be tested for, the existence of
evolution does not reject the notion of God
Corrections for misconceptions about evolution
o Evolution is not deterministic
▪ There is no ultimate goal that all organisms are evolving towards
▪ Organisms do not choose to have adaptations
Title: Evolution
Description: These notes go over the history of evolution, the concept of evolution, the mechanisms of evolution, evidence for evolution, and human evolution. These notes were taken for an introductory college biology course.
Description: These notes go over the history of evolution, the concept of evolution, the mechanisms of evolution, evidence for evolution, and human evolution. These notes were taken for an introductory college biology course.