Genetic Drift What IS Genetic Drift?. Read the snip-it provided. In the space below, write a response to the information presented in the text. Formulate.

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Presentation transcript:

Genetic Drift What IS Genetic Drift?

Read the snip-it provided. In the space below, write a response to the information presented in the text. Formulate a question you have about this topic and write it, as well.

A random chance change in allele frequencies of a population – usually due to a random event

The Bottleneck effect – Result of a natural, random event that changes allele frequencies from the original.

What can CAUSE bottlenecking? Tornados Earthquakes Tsunamis Human destruction Disease What else?

What can happen to a population that has experienced “bottlenecking?

Quick Write – OUT THE DOOR 1.Explain the difference between the bottleneck effect and the founder effect. 2.What is the ONE major thing that both of these events have in common? 3.Explain how genetic drift and natural selection are DIFFERENT as mechanisms of change.