CREATED BY
MUHAMMAD IQBAL KHAN
SS Biology
mikhan1313@yahoo.com
STORES AND PASSES ON
GENETIC INFORMATION
FROM ONE GENERATION TO
ANOTHER .
DNA DEOXYRIBONUCLEIC
ACID
DNA STRUCTURE
THE DNA STRUCTURE IS SHAPED
LIKED A SPIRAL STAIRCASE, OR
TWISTED LADDER.
DNA
STRUCTURE
THE OUTER PARTS OF THE OF
THE LADDER ARE MADE OF
SUGARS.
DNA STRUCTURE
THE STEPS OF THE LADDER
ARE MADE OF PAIRS OF
NITROGEN BASES.
DNA STRUCTURE
1. ADENINE = A
2. GUANINE = G
3. CYTOSINE = C
4. THYMINE = T
THEY ARE REPRESENTED BY
THEIR CAPITAL LETTER.
DNA STRUCTURE
THERE IS ONLY ONE WAY THE
NITROGEN BASES CAN FORM
ADENINE PAIRS WITH THYMINE
GUANINE PAIRS WITH CYTOSINE
DNA STRUCTURE
QUESTION ?
CAN C JOIN WITH A
AND G JOIN WITH T
YES
NO
CORRECT
MOVE ON
SORRY
REVIEW MORE
DNA STRUCTURE
ACTCATGGTCATG
TGAGTACCAGTAC
THIS IS AN EXAMPLE OF A
GENETIC CODE THAT MAY BE
FOUND IN YOUR BODY.
DNA STRUCTURE
THE COMBINATIONS OF THE
NITROGEN BASES IS THE CODE
THAT PRODUCES THE GENES FOR
A PARTICULAR TRAIT.
DNA STRUCTURE
BECAUSE THERE CAN BE SO
MANY DIFFERENT
COMBINATIONIS OF THE BASES
THE CODE CAN BE LIMITLESS
DNA STRUCTURE
EXAMPLE:
ATCGTCAGG MAY BE FOR HAIR
COLOR.
BUT
ATCGTCAGC MAY BE FOR EYE
COLOR
DNA REPLICATION
REPLICATION: IS
THE PROCESS
WHERE DNA
MOLECULES
FORM EXACT
DUPLICATS.
DNA REPLICATION
1. THE LADDER SPLITS
2. FREE FLOATING NITROGEN
BASES BEGIN TO PAIR WITH
EACH STRAND
3. TWO NEW DNA CHAINS ...
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DNA.......All Life Informations Stored Here!

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DEOXYRIBONUCLEIC ACID
STORES AND PASSES ON GENETIC INFORMATION FROM ONE GENERATION TO ANOTHER

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DNA.......All Life Informations Stored Here!

  1. 1. CREATED BY MUHAMMAD IQBAL KHAN SS Biology mikhan1313@yahoo.com
  2. 2. STORES AND PASSES ON GENETIC INFORMATION FROM ONE GENERATION TO ANOTHER . DNA DEOXYRIBONUCLEIC ACID
  3. 3. DNA STRUCTURE THE DNA STRUCTURE IS SHAPED LIKED A SPIRAL STAIRCASE, OR TWISTED LADDER.
  4. 4. DNA STRUCTURE THE OUTER PARTS OF THE OF THE LADDER ARE MADE OF SUGARS.
  5. 5. DNA STRUCTURE THE STEPS OF THE LADDER ARE MADE OF PAIRS OF NITROGEN BASES.
  6. 6. DNA STRUCTURE 1. ADENINE = A 2. GUANINE = G 3. CYTOSINE = C 4. THYMINE = T THEY ARE REPRESENTED BY THEIR CAPITAL LETTER.
  7. 7. DNA STRUCTURE THERE IS ONLY ONE WAY THE NITROGEN BASES CAN FORM ADENINE PAIRS WITH THYMINE GUANINE PAIRS WITH CYTOSINE
  8. 8. DNA STRUCTURE QUESTION ? CAN C JOIN WITH A AND G JOIN WITH T YES NO
  9. 9. CORRECT MOVE ON
  10. 10. SORRY REVIEW MORE
  11. 11. DNA STRUCTURE ACTCATGGTCATG TGAGTACCAGTAC THIS IS AN EXAMPLE OF A GENETIC CODE THAT MAY BE FOUND IN YOUR BODY.
  12. 12. DNA STRUCTURE THE COMBINATIONS OF THE NITROGEN BASES IS THE CODE THAT PRODUCES THE GENES FOR A PARTICULAR TRAIT.
  13. 13. DNA STRUCTURE BECAUSE THERE CAN BE SO MANY DIFFERENT COMBINATIONIS OF THE BASES THE CODE CAN BE LIMITLESS
  14. 14. DNA STRUCTURE EXAMPLE: ATCGTCAGG MAY BE FOR HAIR COLOR. BUT ATCGTCAGC MAY BE FOR EYE COLOR
  15. 15. DNA REPLICATION REPLICATION: IS THE PROCESS WHERE DNA MOLECULES FORM EXACT DUPLICATS.
  16. 16. DNA REPLICATION 1. THE LADDER SPLITS 2. FREE FLOATING NITROGEN BASES BEGIN TO PAIR WITH EACH STRAND 3. TWO NEW DNA CHAINS ARE FORMED

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