DNA Discovery + DNA Replication

What is the end result of DNA replication?

• 2 semi-conservative strands of DNA

• 1 semi-conservative strand of DNA

• Half of a semi-conservative strand.

• Nothing is created

Chargaff's rules state that....

• The amount of A's always = the amount of C's and the amount of T's always = the amount of G's.

• The amount of A's always = the amount of A's and the amount of C's always = the amount of C's.

• The amount of A's always = the amount of G's and the amount of C's always = the amount of T's.

• The amount of A's always = the amount of T's and the amount of C's always = the amount of G's.

What was Rosalind Franklin's contribution to the discovery of DNA?

• She built the first 3D model of DNA

• She took the first X-Ray image of DNA

• She discovered the nitrogen containing bases

• She discovered the covalent bond in DNA

What was Rosalind Franklin's contribution to the discovery of DNA?

• She built the first 3D model of DNA

• She took the first X-Ray image of DNA

• She discovered the nitrogen containing bases

• She discovered the covalent bond in DNA

What does DNA replication mean?

• DNA copies itself during the gap one stage because a new cell needs to be made.

• DNA copies itself during the synthesis stage because a new cell needs to be made.

• DNA copies itself during the gap two stage because a new cell needs to be made.

• DNA copies itself during the M stage because a new cell needs to be made.

What bases are considered Purines?

• A & G

• A & T

• C & G

• C & A

What bases are considered Pyrimidines?

• A&G

• A&T

• C&T

• C&G

What does DNA Polymerase do?

• It helps breakdown the new strand in DNA replication and it proofreads the strands.

• It helps build the new strand in DNA replication and it proofreads the strands.

• It helps unwind the double helix.

• It forms bonds

What contribution did Watson & Crick make to DNA?

• They took the first X-Ray image of DNA

• They built the first 3D model of DNA

• They discovered the pairing of the nitrogen containing bases.

• They discovered the type of bond that is found in DNA

What are the steps in order of DNA replication?

• Unwind the double helix, bond and proofread with DNA polymerase, pair new nucleotides with each old template strand, end result is 2 semi-conservative strands of DNA.

• Unwind the double helix, pair new nucleotides with each old template strand, bond and proofread with DNA polymerase, end result is 2 semi-conservative strands of DNA.

• Pair new nucleotides with each old template strand, bond and proofread with DNA polymerase, end result is 2 semi-conservative strands of DNA, unwind the double helix,

• Bond and proofread with DNA polymerase,unwind the double helix, pair new nucleotides with each old template strand, end result is 2 semi-conservative strands of DNA.