What organelles found in plant and animal cells are also found in bacterial cells?

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.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?