Q1. Bacteria are grown in 15N (heavy) medium and next transferred to 14N (light) medium and allowed to replicate for 1 generation. The DNA is consequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s)? Q2. The Mad Scientist’s Death-Ray Imagine that a mad scientist […]

Please read Chapter 12 of What is Life? A Guide to Biology before beginning this lab. The purpose of this lab exercise is to demonstrate that plants are in our environment and there is diversity among these plants. There are several different groups of plants and four different groups are […]

1. A locomotive train is on its way from Chicago, IL to Madison, WI. The trip is said to last 3.15 hours. When the train arrives in Madison the conductor notices it actually took them 3.26 hours. The train company prides itself on always having its trains to the station […]

Question: Pretend that our class conducted a lab on the population genetics of squirrels in Utah. The class was split into 3 group and sent to different areas of the state (northern, central and southern) to collect DNA samples. 100 squirrels from each location (assume that each population is effectively large […]