DNA Replication, Transcription and Translation Turning genes into proteins
DNA ReplicationDNA replication – Takes place in the nucleus – Requires 2 enzymesPurpose- to make copies of DNAHow is DNA replication related to mitosis?
Complimentary Base Pairing• The 2 sides of DNA are not exactly the same, they are complimentary.• If on one side of the DNA strand there is the nucleotide Cytosine, the opposite side will have Guanine, Adenine always pairs with Thymine.• Remember Chargaff’s rule!
DNA ReplicationDNA is replicated through…1) The unwinding of DNA’s double helix.2) Separation of strands by helicase3) Formation of new complementary strands by DNA polymerase.
helicaseStep 1- an Step 2- enzyme DNA There are now 2 new polymerase adds DNA molecules eachenzyme, helicase, op with an original complimentary baseens up the original pairs to the original parent strand.DNA molecule. parent strand.
Replication Review• Where does replication take place?• What are the enzymes involved and what do they do during replication?• What is a gene?• Approximately how many genes do you have?• How is DNA replication related to mitosis?• Explain complimentary base pairing. Which scientist helped to prove this? (hint: there is a rule named after him)