The tickle syndrome (laughing in response to touch) and trembling ears (triggered by exposure to bright blue light) are both dominant traits in human beings. (a) What is the probability that the first child of parents who are heterozygous for both the tickle trait and the trembling ears trait will […]

Unlike microscopy, cell fractionation and protein purification is often performed as a series of linked steps that can often take several days or longer than a week’s time. a. Most buffer solutions used in this process are isotonic and contain protease inhibitors. Why would this be the case? b. EGTA […]

Q. A man’s grandfather has galactosemia, a rare autosomal recessive disease. The man married with a woman whose sister had galactosemia. The woman is now pregnant with their first child. a. Sketch the pedigree as described. b. What is the possibility that this child will have galactosemia? c. If the […]

Suppose that two mosquito populations are being studied. The populations differ in their choice of the water in which they choose to lay their eggs. One population is urban, and avoids laying eggs in water treated with insecticides which are heavily used in urban areas. What difference between populations would […]