DNA

DNA (Deoxyribonucleic Acid) chemical code a master copy of instructions for cell structure and function agenda blueprints owner’s manual

DNA (Deoxyribonucleic Acid) chemical code gives you your characteristics - traits like hair color, eye color, height, heartbeat, hearing, personality, talents

DNA (Deoxyribonucleic Acid) chemical code organic compound contains carbon nucleic acid

structure (what it looks like) three dimensional double helix spiral staircase twisted ladder

structure sides or “handrails” are made of sugars and phosphates ‘ribo’ is for ribose, a sugar

DNA (Deoxyribonucleic Acid) structure cross pieces, “rungs” or “steps” are made of nitrogen base pairs same two bases always pair adenine, thymine (A, T) cytosine, guanine (C, G)

DNA (Deoxyribonucleic Acid) discovery/history 1950’s x-rayed by Rosalind Franklin Rosalind Franklin DNA X-ray

DNA (Deoxyribonucleic Acid) discovery/history 1950’s -1960’s Maurice Wilkins gives Franklin’s x-rays to Watson and Crick Francis Crick and James Watson make a model of DNA

DNA (Deoxyribonucleic Acid) discovery/history 1960’s Franklin dies of cancer Wilkins, Watson, and Crick share a Nobel Prize for the model

DNA (Deoxyribonucleic Acid) DNA Model Wilkins Watson and Crick DNA Model Sketch

DNA (Deoxyribonucleic Acid) DNA replication copying happens in interphase Watson and Crick also modeled this

DNA (Deoxyribonucleic Acid) DNA replication enzymes break apart the bases RNA collects extra bases from the cytoplasm

DNA (Deoxyribonucleic Acid) DNA replication the extra bases pair with the broken DNA strands new handrails form from sugars and phosphates

DNA (Deoxyribonucleic Acid) DNA replication two new strands have been created

DNA (Deoxyribonucleic Acid) Mutation damaged chromosomes (strands of DNA) deleted/inserted base pairs

DNA (Deoxyribonucleic Acid) Mutation - mistakes in the DNA example: albinism