Every time a cell divides, half of its chromosomes go to one daughter cell and another half of the chromosomes go to the other daughter cell. although the chromosomes split, each daughter cell ends up having the same number of chromosomes as the original cell. why is this?

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 do oceanic plates tend to subduction when colliding with a continental plate

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.