Wide Platform: Larger population, takes more time for fixation or elimination.

Narrow Platform: Small population, allele fixation or elimination occurs quickly.

Allele frequencies can differ within a deem compared to the overall population.

More likely to interbreed within the deem than with the larger population.

Example: 95% of one allele is more likely to be fixed compared to 5%.

Analogy: A drunk walking randomly on a platform.

Larger groups (e.g., 1000 students) have outcomes close to expected ratios due to large sample size.

Small group outcomes vary widely (not always 50-50 heads/tails).

Coin tossing represents meiosis and random mating.

Small populations (10-20, 50-100, even a few hundred) have more fluctuation in allele frequencies due to chance.

Definition: A deem is a small sub-population.

Current Allele Frequency: Influences probability of fixation or elimination.

Random Walk Analogy

Population Genetic Simulation:

Reason for Large Population: In large populations, chance events do not significantly impact allele frequencies.

Concept of Deems

Factors Affecting Allele Outcomes

Genetic Drift

Simulation Example

Large Population Assumption

Hardy-Weinberg Model Assumptions and Genetic Drift