Phylogenetic trees are best described as hypothetical portrayals of evolutionary relationships. the most accurate representations possible of genetic relationships among taxa. theories of evolution. the closest things to absolute certainty that modern systematics can produce. true and inerrant statements about evolutionary relationships.

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.

Eutrophication caused by human nutrient pollution.

Which genetic disorders, caused by an extra x chromosome (xxy), is characterized by a lack of testicular development in males, effeminate features, possible mental impairment, and a thin stature?