Which of the following characteristics evolved independently in mammals and birds?
a) bilateral symmetry
b) amniotic eggs
c) jaws
d) bone
e) endotherm

Common commercial benefits of microorganisms include synthesis ofa. insulin.b. antibiotics.c. aspirin.d. antibiotics and aspirin.e. antibiotics and insulin.

The first amino acid of a new polypeptide chain is

To be or not to be that is da question