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Explore the theoretical foundations of natural selection through an examination of fitness landscapes and dominance patterns in this 30-minute lecture. Delve into the concept of fitness landscapes as a framework for understanding how genetic variations affect organism survival and reproduction across different environmental contexts. Analyze overdominance, where heterozygotes exhibit superior fitness compared to both homozygotes, and contrast it with underdominance, where heterozygotes show reduced fitness relative to homozygous genotypes. Gain insights into how these dominance relationships shape evolutionary trajectories and influence population genetic dynamics. Examine the mathematical models and theoretical principles that govern selection processes, providing a comprehensive understanding of how genetic diversity is maintained or eliminated in populations over time.
