Are there special genetic differences between a benign tumor and metastatic cancer that we could test for?
What makes some tumors spread whereas others stay benign?
What might produce a false positive on a paternity test?
If genes can be transplanted from animals to humans, why can’t the gene that produces insulin be transplanted from an animal to a patient with diabetes for a cure?
What is the relationship between mutation and recombination (in meiosis)? Does the frequency of recombination correlate with mutation rate? Do recombination and mutation work together to promote human evolution?
During telophase, when new daughter cells form how do they "know" what type of cell they will become?
We are currently studying gene switches and natural selection in my class. My students and I do not fully understand what actually turns the switches on and off. For example, in the stickleback fish. What caused the gene to be turned off. Is it something environmental?
Please explain the mechanism by which a species that is drifting genetically to become a new species reorganizes its DNA on its chromosomes, creating a new number of chromosomes or putting the information in a new arrangement.
Dr. DeRisi’s Virochip technology lowers the cost of doing business. How does Dr. DeRisi see his tool changing the way viral research is carried out? For example, viral life cycle, demographic virus reserve pool, and many more types of research might now be possible on a wide scale.
By what percentage do the DNA sequences of two humans differ? What are the mean and standard deviation of the distribution of pairwise DNA-sequence differences between two random human beings?
