tuesday 12/2/2014 q2 wk6 d1 agenda: dna notes: dna activity: dna reading and coloring homework : ...
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Tuesday 12/2/2014
Q2 WK6 D1
Agenda: DNA
Notes: DNA Activity: DNA Reading and Coloring
Homework:
DNA Reading (Annotations) and Coloring Due Wednesday/Thursday 12/3-12/4/2014 for 30 Points
GRADEBOOK CLOSES FRIDAY 12/12/2014!!!
Scientists of DNA
• 1953, James Watson & Francis Crick were accredited for discovering the structure of DNA• Awarded the Nobel Prize
for Physiology and Medicine in 1962; Watson, Crick and Maurice Wilkins
Should someone elsehave received credit???
Scientists of DNARosalind Franklin:Rosalind refined the technique of X-ray
crystallography, to study DNA and produced “Photo 51”
From photo 51, Rosalind determined that DNA is the shape of double helix
Watson & Crick used photo 51 and published their results before Franklin
Rosalind Franklin died in 1985
Location of DNA• DNA is coiled in chromosomes;
chromosomes are located in the nucleus.• DNA is the shape of double helix• Double stranded• Twisted• Similar to a spiral staircase
Draw me
Make up of DNA• DNA is made up of Nucleotides strung together in a
certain order.• Each nucleotide contains…• Deoxyribose (Sugar)• Phosphate• Nitrogen base
• Adenine (A)• Thymine (T)• Guanine (G)• Cytosine (C)
How is DNA organized?• Sugar alternates with phosphate at the sides• The rungs (steps) of the DNA molecule are paired
nitrogen bases• The nitrogen bases pair in the following way…• Adenine ALWAYS pairs with Thymine (A-T)• Cytosine ALWAYS pairs with Guanine (C-G)
The rungs are connected at the sugars
Ended: Periods 4,5,6: 11/13
Nitrogen Base: PRACTICE1. Adenine -2. Cytosine -3. Thymine -4. Adenine -5. Guanine -6. Guanine -7. Cytosine -8. Thymine -
Add to notebook check
Write the appropriate pair with the listed nitrogen base…
Nitrogen Base: answers• Thymine• Guanine• Adenine• Thymine• Cytosine• Cytosine• Guanine• Adenine
1. Adenine2. Cytosine3. Thymine4. Adenine5. Guanine6. Guanine7. Cytosine8. Thymine