Phylogenetic trees allow us to organize all of life onto a single tree based on a common feature that all of life shares, to understand how things are related. We can also create specialized trees that map the evolutionary history of a specific species, such as mammals or reptiles. There are three features of a phylogenetic tree that must be understood: first, a phylogenetic tree depicts the common ancestry of the species that we are studying, whether it be all of life or just mammals. Second, there
LAB 2: OSMOSIS, OSMOTIC PRESSUE, AND HEMOLYSIS Dierdra Renfroe Biology 340-002 Lab Partners: Ale Sanchez, Luke Brown, and Abby Fox September 15, 2016 INTRODUCTION Erythrocytes, or what are commonly known as red blood cells (RBC) within our bodies are constantly being faced with a changing environment. Tonicity is referred to as the concentration of solutes, permeable and nonpermeable, as well as the concentration of water both influencing the water that will come and goe through
Placental Ruminants and Herbivorous Marsupials of Australia The marsupial animal species that have evolved on the isolated continent of Australia are unique compared to the rest of the animal kingdom in many ways due to the harsh and distinctive environment found on the continent. The major area of marsupial biology that distinguishes them from all other eutherian mammals is their mode of reproduction. However, it can be said that there are many other areas in which unique differences can