How many alleles do we receive from each parent?

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

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.