spot the odd one out (and say why) uracilthyminecytosine ribosedeoxyribosethymine...

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Spot the odd one out (and say why) Uracil Thymine Cytosine Ribose Deoxyribose Thymine Cytosine Guanine Thymine Semi- conservative Dispersive Conservative

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Page 1: Spot the odd one out (and say why) UracilThymineCytosine RiboseDeoxyriboseThymine CytosineGuanineThymine Semi- conservative DispersiveConservative

Spot the odd one out (and say why)

Uracil Thymine Cytosine

Ribose Deoxyribose Thymine

Cytosine Guanine Thymine

Semi-conservative

Dispersive Conservative

Page 2: Spot the odd one out (and say why) UracilThymineCytosine RiboseDeoxyriboseThymine CytosineGuanineThymine Semi- conservative DispersiveConservative

What is the difference between deoxyribose and ribose?

What type of spiral is DNA?

How many bases are there to each turn of the DNA molecule?

What three forms of evidence were used to derive the structure of DNA?

How many nucleotides (on average) does it take to make a human chromosome set?

What are chromosomes made of as well as DNA?

Page 3: Spot the odd one out (and say why) UracilThymineCytosine RiboseDeoxyriboseThymine CytosineGuanineThymine Semi- conservative DispersiveConservative

DNA Replication

Page 4: Spot the odd one out (and say why) UracilThymineCytosine RiboseDeoxyriboseThymine CytosineGuanineThymine Semi- conservative DispersiveConservative

DNA Replication

Meselson and Stahl

Grew microbes in 15N growth medium

Then repeatedly on 14N growth medium

DNA was extracted and separated by centrifugation

Page 5: Spot the odd one out (and say why) UracilThymineCytosine RiboseDeoxyriboseThymine CytosineGuanineThymine Semi- conservative DispersiveConservative

DNA Replication