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Transcript
What IS This?? Question of the Day Question: How would you describe DNA to a kid? Answer: … … … Notes: DNA & RNA DNA • • • • Located in nucleus Too large to leave nucleus Made of nucleotides Nucleotide has 3 parts: – Deoxyribose sugar – Phosphate – Base: A, T, C, G • Bases always bond in pairs – A&T – C&G DNA • Watson & Crick discovered structure of DNA – DNA shape = double helix – Received Nobel Prize – Used pictures from Rosalind Franklin James Watson Francis Crick Rosalind Franklin Franklin’s Picture of DNA DNA DNA Replication • DNA copied before mitosis and meiosis • New DNA is identical • Occurs during interphase Growth DNA Replication Growth DNA Replication • Replication: 1. DNA unwinds & unzips 2. Nucleotides are attached with DNA polymerase and ligase • New molecules are attached until anaphase DNA Replication RNA • • • • Single stranded Can leave nucleus Made of nucleotides Nucleotide has 3 parts: – Ribose sugar – Phosphate – Base: A, U, C, G • Bases always bond in pairs – A&U – C&G RNA • Used carry information outside of nucleus • Like a photocopy of DNA Lab: Berry Full of DNA Berry Full of DNA 1. 2. 3. 4. 5. 6. Put your strawberry in baggie Mush 2 minutes Add 10 mL of extraction buffer Mush 1 minute Filter with cheesecloth & funnel Add ethanol Personal DNA Exit Ticket: Would you want your DNA analyzed? Why or why not? Explain in detail using examples.