Many cells whose division is regulated by proteins made by the CDKN2A gene have a specific role in the human body. Skin
melanocytes, for instance, produce melanin, a pigment that helps
protect skin cells from ultraviolet radiation. When melanocytes
undergo mitosis, they are able to form only other melanocytes. Which
two terms best describe what type of cell melanocytes are?
A. specialized
B. differentiated
U
C. totipotent
D. pluripotent
E. undifferentiated

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.