DNA STRUCTURE AND REPLICATION BUILDING BLOCK OF DNA

Slides:

Advertisements

Similar presentations

DNA Replication. Each cell within a body contains the same DNA sequence. Why? Before the cell divides, an exact copy of DNA is made- process called REPLICATION.

Advertisements

DNA Replication DNA is replicated before cell division, when a cell divided into two cells.

DNA REPLICATION. Semi-conservative theory DNA molecule made up of one parental strand and one new strand.

DNA Replication and Repair. How does DNA replicate? Mitosis and meiosis require DNA to replicate itself so that the daughter cells will contain DNA But.

Ch. 12.2: Replication of DNA Section objective:

DNA Replication!.

DNA Replication. Replication of DNA Replication is the process where DNA makes a copy of itself. Why does DNA need to copy? Simple: Cells divide for an.

Do Now!!  Why must DNA be replicated?  Where do you think replication takes place?  Are mistakes ever made while replicating DNA?  Why must DNA be.

Part 3 DNA Replication Learning Targets 5. Understand base pairing and its role in replication, transcription and translation. 6. Understand that.

:P. DNA replication is a semi-conservative process. One strand serves as the template for the second strand. DNA replication is initiated at a region.

 %G=%C and %A=%T  Rosalind Franklin was able to obtain a clear visible representation that the structure of the DNA was a double helix.

DNA Replication – the process

III. DNA Replication A. Each chain of nucleotides of the DNA double helix has all the information needed to reconstruct the complementary chain of nucleotides.

DNA Replication Double helix structure of DNA “It has not escaped our notice that the specific pairing we have postulated immediately suggests.

DNA Replication.

2/5/15 Objective: How does DNA replication occur? Do Now: S1f0.

DNA Replication. Replication Occurs during cell division Must be accurate.

DNA Synthesis When must DNA remake itself? When must DNA remake itself? –Interphase  3 parts to Interphase  G1 – cell carries out normal functions.

DNA Replication When/why do cells need to replicate (copy) DNA? Growth Reproduction Repair Where do we start? Replication origin – a specific sequence.

DNA Replication During replication, the molecule splits into two strands Each half serves as a template to make a new, whole molecule When we make a new.

Origins of replication- start cite of DNA replication Replication fork- where the new strand of DNA elongates DNA Polymerase- Elongates the DNA, adds.

3 Question Challenge – 1/4 1. The complementary base to Adenine in DNA is ________? 2. The 3 parts of a nucleotide are a nitrogen base (A,T, C, or G);

Think About It.. 1. How does a DNA strand nitrogen base order form a second/complimentary DNA strand? 2.During what phase of the cell cycle is DNA replicated?

DNA Replication.

{ DNA Replication.  When DNA makes an exact copy of itself.  Required step before cell division (making new cells).  DNA is the template / Enzymes.

DNA replication (S phase) “A Perfect Copy” Before a cell can divide, the DNA must be copied so a complete set of chromosomes is available for for both.

DNA Replication Pt Pgs. 188 – 189 Objective: I can describe in EXCRUCIATING detail how DNA is replicated. File:/dna-replication1.swf.

Do Now  What is replication?  Where does this take place?

Chromosomes and DNA Replication

DNA Replication pp

BIOLOGY 12 DNA Replication.

How does DNA copy itself?

DNA Replication Learning Goal 1.

DNA Replication Associate the process of DNA replication with it’s biological significance.

DNA Replication Objective 2.

DNA REPLICATION Preparing for Mitosis.

DNA Replication.

Bell Work What are the base pairs?

Chapter 21 Nucleic Acids and Protein Synthesis

Daily Warm-Up Monday, December 9th

DNA Replication Practice Quiz

DNA Replication.

DNA Replication.

Do Now!!  Why must DNA be replicated?

DNA Replication Essential Question: How do enzymes help ensure DNA is copied correctly?

DNA Replication pp

Replication -The main purpose of replication is to produce more exact copies of DNA so that new cells also have DNA to function properly -It begins when.

KEY CONCEPT DNA replication copies the genetic information of a cell.

DNA Replication.

BIOLOGY 12 DNA Replication.

RNA ACTIVE FIGURE General features of a replication fork ACTIVE FIGURE General features of a replication fork. The DNA duplex is unwound.

DNA Replication.

DNA Replication The Details.

4.1: DNA, and in some cases RNA, is the primary source of heritable information. N4.02 DNA Replication Unit 4: Pod 1 DNA.

Biology 1-1b DNA Replication.

DNA Replication Poster

KEY CONCEPT DNA replication copies the genetic information of a cell.

DNA replication.

DNA Replication Essential Question: How do enzymes help ensure DNA is copied correctly?

DNA Replication Chapter 12 Section 2.

DNA Replication Helicase DNA Polymerase DNA Ligase

DNA Replication/ Regeneration

Replication copies the genetic information.

DNA Replication AP Biology Ch 16.2.

KEY CONCEPT DNA replication copies the genetic information of a cell.

Do Now What is replication? Where does this take place?

DNA REPLICATION Preparing for Mitosis.

DNA Replication.

DNA Replication.

Where in a cell are the chromosomes found?

Presentation transcript:

DNA STRUCTURE AND REPLICATION BUILDING BLOCK OF DNA Packaging of DNA http://www.hhmi.org/biointeractive/dna-packaging

4 TYPES OF NUCLEOTIDES IN DNA

DNA REPLICATION

1. DNA Unwinds and Unzips 3’ 5’ gyrase 3’ 5’ helicase ssb ssb ssb ssb

DNA POLYMERASE III WORKING CONDITIONS 3’ n s p 5’ n s p 5’ 3’ DIII MY WAY OR THE HIGH WAY BABY!

SYNTHESIS OF THE LEADING STRAND C G A T C 3’ P A C A G T C 5’ 3’ C G T A DIII C G T A 5’

SYNTHESIS OF LAGGING STRAND C T C A G A G T C A G T C T C A G L G A T C T C A G A A G A T C T C A G other enzymes repair mistakes http://www.youtube.com/watch?v=teV62zrm2P0