You have been tracking a population of birds in the jungle and over several generations observed the following genotype frequencies for a given locus, B : 12% BB, 28% Bb, and 60% bb. The climate changed abruptly and resulted in the death of all homozygous recessive birds. In the next […]

Coming from the acid pH of the stomach which pH levels does the chime find when it enters the duodenum? Why is it necessary to maintain that pH level in the small intestine? What are the organs responsible for the pH level and how is it kept? After digestion the […]

1. Compare and contrast the characteristics of the ideal tissue forming the outer surface of the body with that forming the lining of the small intestine. How are they similar and different? What tissues fulfill these needs? 2. If a bone is broken, it will heal in several months. If […]

You are doing a PCR that requires 1.6ng of DNA in 2uL of sample. You have 100uL of stock DNA with a concentration of 4ng/ul. Using reasonable pipetting volumes (ex. don’t use too much of your sample but don’t pipette an unreasonably small volume), how would you dilute your stock […]