Today, we’ll explore biological evolution, which is the process through which living organisms change over generations. Why do you think understanding evolution is crucial to biology?

Exactly! Evolution helps explain the diversity of life and how species are interconnected. Now, what are some ways organisms can change over time?

Yes! Natural selection is a key mechanism, where the traits that enhance survival and reproduction become more common in the population. Let's remember the acronym 'F.I.T' for Fitness Inheritance Trends. It captures the essence of natural selection.

Sure! For example, faster running speed in prey can help them escape predators. Now, let’s summarize what we’ve learned. Biological evolution is crucial for understanding life’s diversity, and natural selection is a primary mechanism driving this process.

Let’s delve deeper into natural selection. Who can explain what it entails?

Well said! This leads to the adaptation of species. Can you think of instances where adaptation occurs?

Exactly! This is a classic example of adaptive radiation, where a common ancestor evolves into different forms that adapt to various environments. Let’s summarize: natural selection drives adaptation by favoring traits advantageous for survival.

Now, we will explore the evidence that supports biological evolution. What types of evidence come to mind?

Absolutely! Fossil records provide crucial insights. What else?

Correct! Homologous structures indicate evolutionary relationships among species. Remember 'H.O.F.' – Homologous, Ontogeny, Fossils, as evidence of evolution. Any other forms of evidence?

Exactly! Molecular biology provides compelling evidence for shared ancestry. In summary, evidence from fossils, comparative anatomy, and molecular biology all support the theory of evolution.