Molecular Genetics. http://www.emc.maricopa.edu/faculty/farabee/BIOBK/code.gif. INFORMATION CONTENT IN BITS I = X LOG 2 N FROM SHANNON WHERE X IS # CHARACTERS IN MESSAGE
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I = X LOG2N FROM SHANNON
WHERE X IS # CHARACTERS IN MESSAGE
N IS LETTERS IN ALPHABET, ASSUMING THEY ARE EQUALLY LIKELY (PRETTY GOOD ASSUMPTION FOR DNA BASES, NOT SO GOOD FOR AA)
REPRODUCE ONLY IN HOTS CELL
CODE FOR COAT PROTEINS AND ENZMES NEEDED FOR VIRAL LIFE CYCLE
HIJECKS CELL METABOLISM AND PROTEIN SYNTHESIS MACHINERY
CAN BE SURROUNDED BY A MEMBRANOUS ENVELOPE (FLU)
Simplest elements are insertion sequences (prokaryotes only). Contains a gene coding for an enzyme which moves the sequence and is flanked by inverted repeats
Inverted repeats allow the formation of stem-loop stuctures. Loops can be very large, containing whole genes! This is a common theme in nucleic acid processing- remember palindromes, tRNA, etc.
Two insertion sequences flaning a coding region make the whole region portable. We have evolved to evolve.
Carbon Loops can be very large, containing whole genes! This is a common theme in nucleic acid processing- remember palindromes, tRNA, etc.
Atomic mass ~12.1
Atomic number 6
Most versatile chemistry of any element
Sixth most abundant element in the universe
(see atomic number)