biology ch 12 Flashcards
nucleotide
monomers that make up DNA
double helix
two strands wound around each other
replication
THE PROCESS OF MAKING COPIES Of DNA
DNA polymerase
enzyme responsible for DNA replication
functions of nucleic acid
they’re macromolecules that store or transmit RNA - genetic information
three different pars of a nucleotide
- 5 carbon sugars
- phosphate group
- nitrogenous bases
4 possible nitrogenous bases that a nucleotide can have for DNA.
ademne, thymine, cytosine, and guanine
Which of the nitrogenous bases are pyrimidines?
thymine and cytosine
Know which nitrogenous base pairs bind together according to complementary base pairing; Understand how this is supported by Chargaff’s rules.
A=T
C=G
TCGACATGATTACACGGC
AGCTGTACTAATGTGCCG
James Watson
put everything together
francis crick
worked out the math
rosalind franklin
took x-ray pictures of what DNA structures looked like
maurice wilkins
what the dna is shaped like - twisted ladder
erwin chargaff
discovered two rules that helped lead to the discovery of the double helix structure