Biology One
Guided Notes Packet
Chapter 16
Population Genetics and Speciation
16.1 Genetic Equilibrium
Population Genetics:
Microevolution:
Traits follow a Bell Curve:
1. Mutations:
2. Recombination:
Causes of
Variation
3. Random Pairing of Gametes:
Biology One
Guided Notes Packet
Chapter 16
Understanding Evolution through Genetics ---- Key Terms
Gene Pool:
Allele Frequency:
Calculated by:
Example:
Phenotype Frequency:
Calculated by:
Example:
Hardy-Weinberg Genetic Equilibrium:
Ideal Situation (Hypothetical) for a Population would be NO CHANGE OVER TIME (meaning there is no evolution)
5 Criteria for the IDEAL situation:
1.
2.
3.
4.
5.
Is this Possible?
Biology One
Guided Notes Packet
Chapter 16
16.2 Disruption of Genetic Equilibrium
A Disruption in Any One or
Combination of the 5 criteria will
result in change over time
(EVOLUTION) of the species!
1. Mutation:
2. Gene Flow:
3. Genetic Drift:
4. Nonrandom Mating:
5. Natural Selection:
Biology One
Guided Notes Packet
Chapter 16
1. Disruptive:
2. Directional:
3. Stabilizing:
Types of
Natural
Selection
16.3 Formation of Species
Key Terms:
Speciation:
Morphology:
Species:
Methods to Determine Species - - - - - 2 Competing Concepts:
Morph =
Bio =
Biology One
Guided Notes Packet
Geographic Isolation:
Reproductive Isolation:
Rates of Speciation:
1. Gradualism:
2. Punctuated Equilibrium:
Chapter 16