AboutAdam Ross Expertise Anything pertaining to molecular biology including graduate level coursework.
Experience PhD candidate in Molecular Physiology at UC Davis. Over 5 years of lab experience in molecular biology, physiology and genetics.
Education/Credentials B.S.: Biological Sciences with emphasis in Neurology Physiology and Behavior; UC Davis 2007
M.S. Molecular and Cellular Physiology; UC Davis 2009
PhD, Molecular and Cellular Physiology; expected June 2013
Question 1.why adenine always pair with thymine and guanine with cytosine?
2.what characters are needed for genetic code to act as a start and stop codon?
Answer 1. A pairs with T and C with G because the enzymes that replicate DNA using the leading strand to "read" the sequence, and place the corresponding base in the newly synthesized strand. Also, the molecular structures of A-T and C-G allow them to form proper bonds that are the correct size and orientation withing the double stranded DNA helix.
2.ATG usually initiates (start codon)
There are three stop codons: UAG (in RNA) / TAG (in DNA), UAA / TAA, and UGA / TGA
