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12 Cards in this Set

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  • Back
DNA process to mRNA
DNA --> RNA --> add a cap (g) and a tail (Poly A) --> Remove Introns & Extend extrons --> mRNA
Where does the mRNA go?
Through the cytoplasm to a ribosome then a big mRNA is attached and then a tRNA attaches and then goes to the Golgi apparatus
Female = 22 + XX
Male = 22 + XY (XY System)
Birds: F ZW M ZZ
Insects: F XX M X
What does genetic matter have to have?
Pass down info each generation
Needs to copy itself (S Phase)
Sometimes change (mutation)
mechanism for expression
Who were Hershey and Chase and what did they do?
Tested for genetic material in T2/T4 viruses in 1952. For proteins they used radio-active sulfur and for DNA they used radio-active phosphorous
Who were Watson and Crick and what did they do?
Double helix
DNA = deoxyribose
5 C sugars are non-parallel
What do these bond with:
1. Base
2. PO4
3. 2 Nucleotides
4. Weak H+
1. Base - C1
2. PO4 - C5
3. 2 nucleotides: PO4 - C3
4. Weak H+ Bond: Base - Base
How does DNA replication occur?
The bond between Nitrogen and the bases breaks (unzips) and it is held in place.
Protein Synthesis
(Start, end, and in between)
Initiation: AUG
Elongation of amino acid chain
Termination: UAG, UGA, UAA
(code for release factor)
What is:
1. Point Mutation
2. Frame Shift Mutation
1. change in one nucleotide
2. addition or deletion of a nucleotide
What is semi-conservative replication?
Each new DNA has one new double helix and one old strand which is conserved.
What are the virus life cycles?
1. Lytic
2. Lysogenic
3. Temperate