D3 thursday 12 19
This presentation is the property of its rightful owner.
Sponsored Links
1 / 32

D3: Thursday, 12/19 PowerPoint PPT Presentation


  • 87 Views
  • Uploaded on
  • Presentation posted in: General

D3: Thursday, 12/19. Tahlia collected data for the bluejay population this summer. She calculated the allele frequencies for a certain gene (toe length). Freq A = 0.6, Freq a = 0.4. She plans to sample the population again after three generations.

Download Presentation

D3: Thursday, 12/19

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


D3 thursday 12 19

D3: Thursday, 12/19

Tahlia collected data for the bluejay population this summer. She calculated the allele frequencies for a certain gene (toe length).

Freq A = 0.6, Freq a = 0.4.

She plans to sample the population again after three generations.

If the allele frequencies HAVE NOT CHANGED at that time (0.6, 0.4), is the population evolving for that gene (toe length)?


Key concepts

Key Concepts:

  • Genetic variability: genetic drift, gene flow, non-random mating, mutations, natural selection

  • Genetic equilibrium: Hardy-Weinberg principle

  • Speciation

  • Patterns of evolution: gradualism, punctuated equilibrium, adaptive radiation/divergent evolution,

  • convergent evolution (analogous structures), coevolution, extinction (gradual, mass)


Genetic variation

Genetic variation


Factors that influence genetic variability within a population

Factors that influence genetic variability within a population:


1 genetic drift

1.Genetic drift


2 gene flow

2.Gene flow


3 non random mating

3.Non-random mating


4 mutations

4.Mutations


5 natural selection

5.Natural selection


That list was what

That list was WHAT?!


Hardy weinberg principle

Hardy-Weinberg Principle


Five conditions to maintain genetic equilibrium

Five conditions to maintain genetic equilibrium:


Speciation

Speciation


Types of population gene pool isolation

Types of Population (gene pool) Isolation


Environmental factors

Environmental factors


Patterns of evolution

Patterns of Evolution


1 gradualism

1. Gradualism


2 punctuated equilibrium

2.Punctuated equilibrium


3 adaptive radiation divergent evolution

3. Adaptive radiation/Divergent evolution


4 convergent evolution

4.Convergent evolution


5 coevolution

5.Coevolution


6 extinction

6.Extinction


Gradual extinction

Gradual extinction

  • Western Black Rhino

  • IUCN, 2013 (last seen 2006)


Mass extinction

Mass extinction


  • Login