3.) Describe, to the best of your ability the bond chemistrybehind the following attributes of DNA:
a. the double-strandedness
b. the antiparallel nature of the two strands.
c. the twist of the ladder into a helix.
4.) Griffith discovered that S. pneumoniae caused pneumonia inmice. In his experiments, mice were injected with different strainsof treated and untreated bacteria. For each of the following,indicate whether the mice lived or died and why.
a. Mice injected with heat-killed S (smooth) strain
b. Mice injected with living S (smooth) and heat-killed R(rough) strain
c. Mice injected with heat –killed S and living R
