Download DNA and DNA Replication Guided Notes

DNA and DNA Replication Step 3 •
Breakout #1 The Origin of the Double Helix •
Rosalind ___________________________ •
X-­‐ray photographs of ________________crystals •
Research partner Maurice Wilkins •
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Supervised Franklin and understood her work Watson & Crick •
Used Franklin’s ________________________research and photographs to determine the structure of DNA •
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undergo cell division Breakout #5 Accuracy and Repair •
Replication is very ________________________ •
One error in every ________________________________pairs of nucleotides •
DNA is composed of two ______________________________________chains •
Structure of DNA •
DNA _________________________________have _______parts: •
The number of ___________________and mutations are reduced by “proofreading enzymes” •
like a spiral staircase Double ______________________ A mistake that results in a change in the nucleotide _____________________________ that wrap around each other to form a ____________________spiral, •
____________________________do occur •
___________________ The Double Helix Once the DNA is _________________________, the cell is ready to They detect errors and replace the ______________________ nucleotide with the _______________________ nucleotide •
Doesn’t always work •
Skin cancer Sugar molecule •
______________________________ •
_____________________________ group •
_____________________________ base Nitrogen ___________________ •
Adenine = ______ •
Guanine = ______ •
Cytosine = ______ •
Thymine = ______ Right – p. 1
Right – p. 3
Complementary Base Pairing •
DNA nucleotides pair in _________________________ combinations •
Base-­‐pairing _______________________ •
Cytosine & Guanine •
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Adenine & Thymine •
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______________ ______________ Base pairs are connected to one another by _______________ ______________________ ____________________. Breakout #2 DNA Replication Taking a closer look at __________________________ Replication of DNA •
________________________________ •
The process of copying DNA in the cell Step 1 •
The __________________________________ of the __________________ •
“_______________________________” DNA Breakout #3 Step 2 •
The unzipped strands of DNA are used as ______________________________ •
An _________________________________brings in free nucleotides to build the __________________________________________ daughter strands Breakout #4 Right – p. 2