Write a reflection about your learning in this unit. Your reflection should be at least 3 sentences. Use the following sentences as a guide.

One thing I didn't know about genetic variation is...
I better understand why mammals evolved so quickly after the extinction of dinosaurs because...
I am not quite sure I Understand….

One thing I didn't know about genetic variation is that it can occur through various mechanisms such as mutations, gene flow, and genetic drift. Previously, I had only thought of it in terms of mutations. Understanding these different processes has provided me with a more comprehensive understanding of genetic variation and how it contributes to biodiversity.

I better understand why mammals evolved so quickly after the extinction of dinosaurs because they had already been diversifying during the Mesozoic era. I learned that mammals already existed and were adapting to various niches during that time. This allowed them to rapidly fill the vacant ecological niches left behind after the extinction event, leading to their diversification and evolutionary success.

I am not quite sure I understand the intricate details of how natural selection acts on genetic variation. Although I have gained a basic understanding of the concept, I would like to delve deeper into specific examples and the ways in which selective pressures shape genetic variation. Further exploration and study on this topic will help me clarify and expand my understanding.