_
DNA -
History -
1950 :
·
Maurice Wilkens and Rosalind Franklin
Look at x-ray diffractions
DNA is a helix
James Watson Francis Crick
·
and
Analysed data
-
1953 :
Watson
·
and Crick
-
Build double helix model
Win Nobel Prize
-
1960 :
Watson Crick
·
and
-
A =T ; ) = G theory
-
DNA can replicate itself
1961 :
·
Crick and Brener
-
Genetic Proof of codon
Codons store
genetic into Protein Synthesis
-
X NA _ _
Structure-
Base always attaches to
sugar
·
Twisted double helio -
-
Outer Strands :
·
s
Sugar phosphate =
·
+
bonds
Strong
-
P
·
Nitrogenous base :
Weak
hydrogen bonds
-
Link to molecule
sugar
. . . . . . . . . . . .
·
Bases differ
" ·
Adenine always bonds ---------
with
hydrogen
double
· !
A =T A u Cytosine bonds with triple hydrogen
-
I
; =
----------------------
- = G
Purines
·
-
Guanine and adenine
Two fased
-
rings
Pyrimidines
·
Thymine Cytosine uracil
-
, ,
and
DNA -
History -
1950 :
·
Maurice Wilkens and Rosalind Franklin
Look at x-ray diffractions
DNA is a helix
James Watson Francis Crick
·
and
Analysed data
-
1953 :
Watson
·
and Crick
-
Build double helix model
Win Nobel Prize
-
1960 :
Watson Crick
·
and
-
A =T ; ) = G theory
-
DNA can replicate itself
1961 :
·
Crick and Brener
-
Genetic Proof of codon
Codons store
genetic into Protein Synthesis
-
X NA _ _
Structure-
Base always attaches to
sugar
·
Twisted double helio -
-
Outer Strands :
·
s
Sugar phosphate =
·
+
bonds
Strong
-
P
·
Nitrogenous base :
Weak
hydrogen bonds
-
Link to molecule
sugar
. . . . . . . . . . . .
·
Bases differ
" ·
Adenine always bonds ---------
with
hydrogen
double
· !
A =T A u Cytosine bonds with triple hydrogen
-
I
; =
----------------------
- = G
Purines
·
-
Guanine and adenine
Two fased
-
rings
Pyrimidines
·
Thymine Cytosine uracil
-
, ,
and
