Baseball Las Vegas Odds

Biology and Probability Help?
Draw the complete and proper molecular configuration of the phosphate molecules used to build the DNA and RNA molecules:
Which holds the complimentary nitrogen bases together in the DNA and RNA molecules:
(I thought it was “The hydrogen bonds” but there are four blanks)
Besides being hybridized for their high-quality meat, what other traits have ranchers selected in their hybrid crosses of cow/cattle:
Why have the speeds of winning times for race horses at the track sort of leveled out over the last few decades…why haven’t they improved like the statistics of baseball players?
On a six-sided pair of regulation dice from Las Vegas, what are the odds that you’ll grow a “6″ on any single roll of the dice?
Answer as much as you can, if you can’t answer all of them, still feel free to answer. This is on a review sheet for a test tomorrow that I have to do well on. Help please! Thanks in advance!
1A) the four blanks are adenine, guanine,thymine(DNA) or uracil(RNA) and cytosine
Proline Daily Baseball Betting 6/30/11