DNA: The Blueprint of Life
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Transcript of DNA: The Blueprint of Life
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Bell Ringer: What is mutation? How does this impact cell division, DNA replication, mitosis and meiosis?
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DNA:The Blueprint of Life
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Replication
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1. Phosphate2. Sugar (Deoxyribose)3. Nitrogenous Base
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G
C
A
T
G
C
C
C
CC
G
G
G
G
AA
TT
T
A
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Top Sequence: GACGATTGACComplimentary: CTGCTAACTG
Bottom Sequence: CTGCTAACTGComplimentary: GACGATTGAC
Question 1. What is the sequence of each strand of DNA?Question 2. What is the complimentary sequence?
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Replication:Process by which a cell
makes a copy of the DNA in its nucleus
http://www.youtube.com/watch?v=hfZ8o9D1tus
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Transcription
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1. Phosphate2. Sugar (Ribose)3. Nitrogenous Base
Question 3. Is mRNA single-stranded or double-stranded?
mRNA (messenger RNA): RNA that copies the coded message from DNA in the nucleus and carries the message into the cytoplasm.
Question 4. What are 3 differences between DNA and RNA?
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Question 5. What is the mRNA sequence?
GACGAUUGA
Question 6. What is the sequence of the template DNA?
CTGCTAACT
Why does sequence matter?
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Genetic Code: Order of nitrogenous bases that specifies what type of protein will be produced.
Gene: Segment of DNA that codes for a protein
Gene
C T G C T A A C T
Genetic Code
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Transcription: Process by which information on a strand of DNA is copied into a strand of mRNA.
http://www.dnatube.com/video/3450/DNA-Transcription
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Translation
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C T G C T A A C T
Genetic Code
Question 7. What would the mRNA sequence be?
GAC GAU UGA
GACGAUUGA
Codon: Sequence of three nucleotides that encodes a specific amino acid.
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Protein Synthesis
Question 8. Where does replication take place?
Question 9. Where does transcription take place?
Question 10. Where does protein synthesis take place?
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Transfer RNA: RNA in the cytoplasm that carries an amino acid to the ribosome and adds it to the growing protein chain.
mRNA attaches to the ribosome, where protein synthesis begins.
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mRNA read in ‘triplicate’- 3-letter codes of bases specific for an amino acid
Attached amino acids become a protein chain.Question 11.
How many bases make a codon?
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C T G C T A A C T
1. Convert DNA sequence to mRNA.
2. Use the chart to match codons to amino acids.
1. GAC GAU UGA
2. Val Val STOP
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Translation: The process by which a protein is synthesized from the information
encoded on an mRNA strand.
http://go.distance.ncsu.edu/animations/proteinsynthesis/
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