What is the consensus sequence of these three DNA sequences? 5' - G G T G C A C - 3' 5' - A A T T C A C - 3' 5' - G G T T C T C - 3'

Polyglycine, a simple polypeptide, can form a helix with φ = -80°, ψ = +150°. From the Ramachandran plot (as shown), describe this helix with respect to handedness.

Which of the following pieces of DNA is going to be easier to separate into single stranded molecules using heat (ie, have a lower melting point), which breaks hydrogen bonds? Why? 1. 5’ ATTTTCCGTAAT 3’    3’ TAAAAGGCATTA 5’ 2. 5’ ACGGTTTACCGG 3’    3’ TGCCAAATGGCC 5’ A) 2; it has more C-G pairs which are connected by three hydrogen bonds instead of two, so they are easier to break.   B) 1; it has more A-T pairs which are connected by one hydrogen bond instead of two, so they are easier to break.   C) 2; it has more C-G pairs which are connected by two hydrogen bonds instead of three, so they are easier to break.   D)1; it has more A-T pairs which are connected by two hydrogen bonds instead of three, so they are easier to break.

Below are some nucleotide sequences located on a segment of one strand of DNA, from the 5'to the 3' Indicate the complementary sequence of nucleotides that would appear on the adjacent DNA strand from the 3' to the 5' end. 5' AGTCCG 3'           5' CCTTGA 3'