The Human Genome Project,which got under way in 1990,is an international effort to_______ .
A)clone deleterious genes from humans and study their mode of action
B)determine the base sequence of the human genome and to identify all the genes within
C)collect plant seeds in order to reduce the impact of human activity on plant extinction
D)clone beneficial genes from humans for eventual use in gene therapy
E)collect samples of cells from all parts of the world in order to preserve human genetic diversity