Freckles (F) and six fingers (S) are dominant alleles in humans and the genes occur on different chromosomes. If an FfSs male and an FfSs female have a WHOLE BUNCH of kids, Here are the expected ratios below. 9: freckles/ 6 fingers 3: freckles/ no 6 fingers 3:no freckles/ 6 […]

The decision about whether or not to screen for a condition can be quite controversial. However, even in the case of noncontroversial screening programs, such as blood pressure screening, there will always be factors that argue for and against the implementation of the screening program. In preparation for this week’s […]

Population Density Lab NOTE: You will need a TI-83 or 84 graphing calculator for this lab. If you don’t own one, try to borrow one. If you cannot borrow one, there are free TI-83 calculator downloads online here: http://education.ti.com/en/us/software/details/en/480DF008128C49DDA5E882E76CE9C8B2/swti83plussdk Although density is usually an important population characteristic in ecological studies, […]

Exercise 1: Hanging-drop and wet-mount preparations 1. How does true motility differ from Brownian movement?2. What morphological structure is responsible for bacterial motility?3. Why is a wet preparation discarded in disinfectant solution or biohazard container?4. What is the value of a hanging-drop preparation?5. What is the value of a wet-mount […]