Unit 1 Review - Natural Selection

The video tutorial covers the basics of evolution, defining it as changes in allele frequency within a population. It explains natural selection as differential reproductive success and introduces the concept of fitness. The tutorial discusses the Hardy-Weinberg equilibrium through a population genetics lab, providing examples of natural selection like flowering time changes and sickle cell anemia. It also covers genetic drift, the bottleneck effect, and evidence for evolution, such as antibiotic resistance and homologous structures. The video concludes with a discussion on common ancestry and a camouflage lab experiment.

Explain the concept of directional selection with an example.

Discuss the evidence for evolution provided by antibiotic resistance.

What role does DNA play in supporting the theory of common ancestry?

What is the central dogma of molecular biology and why is it significant?