DNA WATSON AND CRICK DOUBLE HELIX 1953. DNA FUNCTION CONTROL CELL FUNCTIONS STORE HEREDITARY...
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Transcript of DNA WATSON AND CRICK DOUBLE HELIX 1953. DNA FUNCTION CONTROL CELL FUNCTIONS STORE HEREDITARY...
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DNAWATSON AND
CRICK
DOUBLE HELIX
1953
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DNA FUNCTION•CONTROL CELL FUNCTIONS•STORE HEREDITARY INSTRUCTIONS•COPY THOSE HEREDITARY INSTRUCTIONS TO A NEW GENERATION•CHANGE FOR EVOLUTION•GIVE INSTRUCTIONS FOR PROTEIN SYNTHESIS
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Four nucleotides form DNA
• Five carbon sugar ( deoxyribose )• phosphate group• nitrogen-containing base:adenine, guanine, thymine, cytosine
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NITROGENATED BASE
SUGAR(RIBOSE)
PHOSPHATE GROUP
NUCLEOTIDE
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A
GUANINE
GENERAL STRUCTURE OF A NEUCLOTIDE
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TitleRIBOSE
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Title
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Title
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Title
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Title
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Title
DEOXYRIBOSE
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-
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TIMINA
GUANINA
PP P -
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DNA structure• Two parallel strands of nucleotides
• twisted into a double helix• Adenine -- Thymine• Guanine -- Cytosine• linked by hydrogen bonds
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COMPLEMENTARY BASES
THYMINE ADENINE
GUANINE CITOSINE
DNATHE NITROGENATED BASES UNITE BY HYDROGEN BONDS
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DNA StructureA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
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DNA StructureA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
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DNA DUPLICATION
NUCLEUS
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DUPLICATION
THE DNA UNWINDSEACH PARENT STRAND IS CONSERVEDA NEW COMPLEMENTARY STRAND IS
ASSEMBLED
adenine always pairs with thymineguanine always pairs with cytosine
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DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
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DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDS
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DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDSEach nucleotide templates thecomplementary one of thenew strain.
-T-A-C-G
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DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDSEach nucleotide templates thecomplementary new strain.
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
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DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDSEach nucleotide templates thecomplementary new strain.EACH PARENT STRAND IS CONSERVEDA NEW COMPLEMENTARY STRAND IS ASSEMBLED
adenine always pairs with thymineguanine always pairs with cytosine
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
A-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
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RNA
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DNAWATSON AND CRICK
DOUBLE HELIX
1953
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CELLULAR CONTROLSACID NUCLETIC STRUCTURE
DNA RNA
DOUBLE chains in all thecells
SIMPLE chain in all the cells
CELLULAR CONTROLGIVES THE MESSAGES
EXPRESION OF THE GENETIC INFORMATION(PROTEIN SYNTHESIS)
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NUCLEIC ACIDSSTRUCTURES
DNA RNA
DOUBLE HELIX SINGLE HELIX
store hereditary info protein synthesis
Deoxyribose, Thymine Ribose, Uracil
TRANSCRIPTION TRANSLATIONproteins
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DNA DUPLICATION
RNATRANSCRIPTION
NUCLEUS
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AC
A
T C G T A AG
C TC
C
TG
TA
G C A T T C
G
AG
G
TRANSCRIPTION
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AC
A
T C G T A AG
C AC
C
GG
T
G
CTTACGA
TG
T
CG
TRANSCRIPTION
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AC
CC
T C G T A AG
C A
GG
T
G
CTTACGA
TG
T
GC
UUACGA
TRANSCRIPTION
RNA
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DNA DUPLICATION
RNATRANSCRIPTION
PROTEINS
TRANSLATION
NUCLEUS
RIBOSOMES
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TRANSCRIPTION
TRANSLATION
PROTEIN SYNTHESIS
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TYPES OF RNA
"G ives th e m essag e"P ro te in S eq u en c e
m R N AM E S S A N G E R
"B u ild s th e P ro te in "Is 6 0 % o f th e R ib osom e
rR N AR IB O S O M A L
"Tran s la te th e lan g u ag e"A ttac h an am in oac id to a cod on
tR N ATR A N S F E R E N C E
R N ATyp e t it le h e re
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TRANSLATION
MET ALA
PHE
GLY
THR
mRNA
AMINOACIDS
GGUU UU
GGCC AA CC CC AA
GGAAAA
GGGG CCUU UU UUGG CC UU AAAA CC
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PROTEINA
SECUENCIA DE AMINOACIDOS
MET ALA GLY PHE THR ILE SER
PROTEIN
SEQUENCE OF AMINOACIDS
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RNA
DNA
PROTEIN
REPLICATION
TRANSCRIPTION
TRANSLATION