Biotechnology raises ethical questions, primarily concerning the

select one:

a. whether life exists on other planets.

b. safety of eating transgenic plants.

c. ways in which knowledge should be used.

d. best use of funds for biological research

cell regulation is conducted by special proteins.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands