Q1. What unique aptitude do DNA molecules have? Why is this ability so important? What are the similarities and differences in DNA and RNA? What are the respective functions in general and in protein systhesis? What are some things that might damage genes?Q2. As a biologist it is your job […]

In the plant Arabidoposis thaliana, a geneticist is interested in the development of trichomes (small projections) on the leaves. A large screen turns up two mutant plants (A and B) that have no trichomes, and these mutants seem to be potentially useful in studying trichome development. (If they are determined […]

Question: Kangaroo rats native to North American deserts have very efficient kidneys. They excrete an exceedingly small volume of highly-concentrated urine in order not to lose much water from their bodies. If you compare a desert kangaroo rat kidney and a human kidney you would see that the rat kidney has […]

Tay-Sachs is a recessive lethal disease in which there is neurological deterioration early in life. This disease is rare in the population overall but is found at relatively high frequency in Ashkenazi Jews from Central Europe. A woman (Mary) whose maternal uncle had the disease is trying to determine the probability that she […]