Download Mechanisms of Evolution

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Human genetic variation wikipedia, lookup

Group selection wikipedia, lookup

Polymorphism (biology) wikipedia, lookup

Hardy–Weinberg principle wikipedia, lookup

Dual inheritance theory wikipedia, lookup

Genetic drift wikipedia, lookup

Adaptive evolution in the human genome wikipedia, lookup

Population genetics wikipedia, lookup

Microevolution wikipedia, lookup

Koinophilia wikipedia, lookup

Transcript
What we
know now
that
Darwin
didn’t
More than 99% of all
species that have ever
lived are now extinct.
New species formed to
take their place.
HOW???
Speciation-
What drives this ‘speciation’?
ISOLATING MECHANISMS
• Behavioral• Geographical• Temporal-
For evolution to take
place, something must
upset the genetic
equilibrium of a
population.
Hardy- Weinberg
Principle
The frequency of alleles in a
population will remain
constant unless one or more
factors cause those
frequencies to change.
In other words…
Five conditions required for
equilibrium1.
2.
3.
4.
5.
Mechanisms of
Evolution
Directional, Stabilizing, and
Disruptive Selection
Genetic Drift
Patterns of Evolution
Adaptive Radiation
Convergent Evolution
Co-evolution
Punctuated Equilibrium
Extinction
Artificial Selection