Login | Signup now       

Guest

 Click to see how  

HOME | VIDEOS | DOCUMENTS | COLLECTIONS | UPLOAD | BROADCAST | MY ACCOUNT | FEEDBACK | ABOUT

Share  Title: Dna Molecular Biology Visualizations - Wrapping And Replicat...

 
iConnect (Beta)   |  Like   |    Sponsor  |   Comment   |    Report  

Related Profiles

If you are an author or an inventor or an individual related to the work displayed in this video, you can click on the 'add me as' button to link your researchusa profile to this entry. Doing so automatically puts you on the iConnect network bringing great visibility to all your related work.

    
 
Article

View Cross Ref (Beta)

Your Edit is Valuable. Editor's names show on Edit pannel.Edit this article  

 

DNA replication is the process of copying a double-stranded DNA molecule. This process is important in all known life forms and the general mechanisms of DNA replication are not the same in prokaryotic and eukaryotic organisms. As each DNA strand holds the same genetic information, both strands can serve as templates for the reproduction of the opposite strand. The template strand is preserved in its entirety and the new strand is assembled from nucleotides. This process is called semiconservative replication. The resulting double-stranded DNA molecules are identical; proofreading and error-checking mechanisms exist to ensure extremely high fidelity. In a cell, DNA replication must happen before cell division. Prokaryotes replicate their DNA throughout the interval between cell divisions. In eukaryotes, timings are highly regulated and this occurs during the S phase of the cell cycle, preceding mitosis or meiosis I.A DNA strand is a long polymer built from nucleotides; two complementary DNA strands form a double helix. The two strands in the DNA backbone run anti-parallel to each other: One of the DNA strands is built in the 5' → 3' direction while the other runs in an anti parallel direction, however is read 3' → 5' direction (5' and 3' each mark one end of a strand). Each nucleotide consists of a phosphate, a simple sugar or a deoxyribose sugar - forming the backbone of the DNA double helix - plus a base.This gives the shape of a spiral ladder to DNA.The base pair forms the step of the ladder and the sugar with phosphate molecule forms the handrail. When a nucleotide base forms hydrogen bonds with a complementary base on the other strand, they form a base pair: Adenine pairs with thymine and cytosine pairs with guanine. These pairings are often expressed with C:::G and A::T where the dots indicate hydrogen bonds (three hydrogen bond interactions between cytosine and guanine versus two hydrogen bond interactions between adenine and thymine). A strand running in the 5'→ 3' direction that has adenine will pair with the base thymine on the complementary strand running in 3'→ 5' direction. 

 
Related Documents
Sequence Alignment and Molecular Visualization
siRNA and gene silencing
Modeling and Analysis of Globalizing Manufacturing SMEs in Developing Economies
 
Member Documents
 

Keywords
DNA  genetics  replication  warping  cell  
 
 About This Video
 
 Subject Biology
 Category Documentary
 Duration 00:00:02
 Views 3539
 Added 30-10-07
 Contributor    123456
 Add to Favourites
 Report Abuse
 
 Related Videos
 See More

Human

 RunTime  00:03:32
 Uploaded  27-11-07
 Views  3332
   
 Human Genome

Cellular

 RunTime  00:00:02
 Uploaded  31-10-07
 Views  3507
   
 Cellular Division

The

 RunTime  00:02:50
 Uploaded  27-11-07
 Views  4934
   
 The wonders of a tiny cel...

Stem

 RunTime  00:59:27
 Uploaded  20-12-07
 Views  4094
   
 Stem Cells: The Brain's B...

Building

 RunTime  00:00:02
 Uploaded  30-10-07
 Views  3702
   
 Building a Human - Commen...

IBM

 RunTime  moderate
 Uploaded  16-09-10
 Views  5071
   
 IBM Research Computationa...

Cell

 RunTime  00:00:02
 Uploaded  31-10-07
 Views  3986
   
 Cell division on contrast...

DNA

 RunTime  00:02:50
 Uploaded  26-11-07
 Views  3597
   
 DNA transcription

Stem

 RunTime  00:00:02
 Uploaded  30-10-07
 Views  3789
   
 Stem Cells

Hydrogen

 RunTime  00:03:42
 Uploaded  26-12-07
 Views  4044
   
 Hydrogen Fuel Cell

Molecular

 RunTime  00:03:02
 Uploaded  28-12-07
 Views  3361
   
 Molecular dynamics simula...

Nobel

 RunTime  moderate
 Uploaded  10-09-10
 Views  5189
   
 Nobel Laureate Venki Rama...

Video

 RunTime  00:03:20
 Uploaded  28-11-07
 Views  3715
   
 Video Journey Into Nanote...

Cell

 RunTime  00:00:02
 Uploaded  31-10-07
 Views  4037
   
 Cell division

Live

 RunTime  00:05:25
 Uploaded  27-11-07
 Views  3924
   
 Live Cell Video Microscop...

Stem

 RunTime  00:09:00
 Uploaded  08-01-08
 Views  3525
   
 Stem Cell Research Docume...

NASA:

 RunTime  00:02:20
 Uploaded  09-12-07
 Views  3957
   
 NASA: Exploring Ozone

Alembic

 RunTime  00:05:27
 Uploaded  26-12-07
 Views  3874
   
 Alembic Instruments VE-2 ...

 Member Videos
 See More

Nanotechnology

 RunTime  00:10:28
 Uploaded  27-11-07
 Views  8101
   
 Nanotechnology Takes Off ...

Blood:

 RunTime  00:00:02
 Uploaded  01-11-07
 Views  4973
   
 Blood: Path of a Red Bloo...

Matlab

 RunTime  00:00:02
 Uploaded  18-10-07
 Views  4578
   
 Matlab Tutorial for the b...

The

 RunTime  00:00:02
 Uploaded  03-11-07
 Views  4575
   
 The Civil War: Honorable ...

The

 RunTime  00:00:02
 Uploaded  06-11-07
 Views  4400
   
 The Hubble Deep Field: Th...

Manipulating

 RunTime  00:00:02
 Uploaded  18-10-07
 Views  4382
   
 Manipulating Animated Fun...

Sound

 RunTime  00:05:03
 Uploaded  24-11-07
 Views  4323
   
 Sound & Vision (Animation...

CEV

 RunTime  00:00:02
 Uploaded  22-10-07
 Views  4310
   
 CEV NASA space launch roc...

The

 RunTime  00:00:02
 Uploaded  03-11-07
 Views  4243
   
 The Triumph and Tragedy o...

Oppenheimer

 RunTime  00:00:02
 Uploaded  03-11-07
 Views  4242
   
 Oppenheimer

Aerodynamics

 RunTime  00:00:02
 Uploaded  19-10-07
 Views  4054
   
 Aerodynamics

Terry

 RunTime  00:00:02
 Uploaded  18-10-07
 Views  3968
   
 Terry Tao Fields Medal In...

 

 

Comments | Queries | Clarifications