LabBench

Population Genetics and Evolution

Introduction

Key Concepts

Concept 1: A Large Breeding Population

Concept 2: Random Mating

Concept 3: No Change in Allelic Frequency Due to Mutation

Concept 4: No Immigration or Emigration

Concept 5: No Natural Selection

Concept 6: Estimating Allelic Frequency

Concept 7: The Hardy-Weinberg Equation

Concept 8: Sample Problem 1

Concept 9: Sample Problem 2

Concept 10: Sample Problem 3

Concept 11: Allelic Frequency vs. Genotypic Frequency

Design of the Experiment

Analysis of Results

Lab Quiz

Estimating Allelic Frequency

If a trait is controlled by two alternate alleles, how can we calculate the frequency of each allele? For example, let us look at a sample population of pigs.

The allele for black coat is recessive to the allele for white coat. Can you count the number of recessive alleles in this population?