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DNA: THE ALAPHABET OF LIFE - PowerPoint PPT Presentation


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DNA: THE ALAPHABET OF LIFE. CREATED BY CHRIS WOODS. DNA. DEOXYRIBONUCLEIC ACID. STORES AND PASSES ON GENETIC INFORMATION FROM ONE GENERATION TO ANOTHER . DNA STRUCTURE. THE DNA STRUCTURE IS SHAPED LIKED A SPIRAL STAIRCASE, OR TWISTED LADDER. DNA STRUCTURE.

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Presentation Transcript
slide1

DNA: THE ALAPHABET OF LIFE

CREATED BY CHRIS WOODS

slide2

DNA

DEOXYRIBONUCLEIC ACID

STORES AND PASSES ON GENETIC INFORMATION FROM ONE GENERATION TO ANOTHER .

slide3

DNA STRUCTURE

THE DNA STRUCTURE IS SHAPED LIKED A SPIRAL STAIRCASE, OR

TWISTED LADDER.

slide4

DNA STRUCTURE

THE OUTER PARTS OF THE OF THE LADDER ARE MADE OF SUGARS.

slide5

DNA STRUCTURE

THE STEPS OF THE LADDER ARE MADE OF PAIRS OF NITROGEN BASES.

slide6

DNA STRUCTURE

  • ADENINE = A
  • GUANINE = G
  • CYTOSINE = C
  • THYMINE = T
  • THEY ARE REPRESENTED BY
  • THEIR CAPITAL LETTER.
slide7

DNA STRUCTURE

THERE IS ONLY ONE WAY THE NITROGEN BASES CAN FORM

ADENINE PAIRS WITH THYMINE

GUANINE PAIRS WITH CYTOSINE

slide8

DNA STRUCTURE

QUESTION ?

CAN C JOIN WITH A

AND G JOIN WITH T

YES

NO

slide9

CORRECT

MOVE ON

slide10

SORRY

REVIEW MORE

slide11

DNA STRUCTURE

ACTCATGGTCATG

TGAGTACCAGTAC

THIS IS AN EXAMPLE OF A GENETIC CODE THAT MAY BE FOUND IN YOUR BODY.

slide12

DNA STRUCTURE

THE COMBINATIONS OF THE NITROGEN BASES IS THE CODE THAT PRODUCES THE GENES FOR A PARTICULAR TRAIT.

slide13

DNA STRUCTURE

BECAUSE THERE CAN BE SO MANY DIFFERENT COMBINATIONIS OF THE BASES THE CODE CAN BE LIMITLESS

slide14

DNA STRUCTURE

EXAMPLE:

ATCGTCAGG MAY BE FOR HAIR

COLOR.

BUT

ATCGTCAGC MAY BE FOR EYE

COLOR

slide15

DNA REPLICATION

REPLICATION: IS THE PROCESS WHERE DNA MOLECULES FORM EXACT DUPLICATS.

slide16

DNA REPLICATION

  • THE LADDER SPLITS

2. FREE FLOATING NITROGEN BASES BEGIN TO PAIR WITH EACH STRAND

3. TWO NEW DNA CHAINS ARE FORMED