CREATED BY MUHAMMAD IQBAL KHAN SS [email protected]
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 = A2. GUANINE = G3. CYTOSINE = C4. THYMINE = T
THEY ARE REPRESENTED BYTHEIR CAPITAL LETTER.
DNA STRUCTURE
THERE IS ONLY ONE WAY THE NITROGEN BASES CAN FORM
ADENINE PAIRS WITH THYMINEGUANINE PAIRS WITH CYTOSINE
DNA STRUCTUREQUESTION ?
CAN C JOIN WITH A
AND G JOIN WITH T
YES
NO
CORRECT
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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 STRAND3. TWO NEW DNA CHAINS ARE FORMED