Your Inner Fish Review

In the "Your Inner Fish"video, we were taught about how fish came onto land and how they eventually evolved more amphibian-like traits, such as hind legs for walking. It  went over how many of our characteristics evolved from them and the physical characteristics which we adapted to own. This series not only taught me about the evolution of man kind but how we fit into the grand idea of earths history.
"What is significant about the master gene EDA?" Master gene EDA is the gene that controls all of our skin organs such as teeth, hair and feathers. It helped to connect all animals as this gene is present in all species and develops some of our most defining characteristics. It connects to our unit about genes since it shows the regulation of genes and traits, but also about how this gene has survived natural selection and evolution to allow us human beings to evolve."Why are mass extinctions important?". Mass extinctions pave the way for new species to rise.


 For example, after the dinosaurs ruled the earth all throughout the Triassic, Jurassic, and 

Cretaceous eras, the mass extinction 65 million years ago wiped them all out, creating a new niche for mammals to cover. This extinction was essential for the continuation of mammals as a species, and eventually our success, since we evolved from the earliest mammals that emerged after the extinction.