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Top competitors on query "where do nucleotides come from during dna replication"
http://learn.genetics.utah.edu/ Competition: low
Step up to the virtual lab bench and see how it works! GEL ELECTROPHORESIS Have you ever wondered how scientists work with tiny molecules that they can't see? Here's your chance to try it yourself! Sort and measure DNA strands by running your own gel electrophoresis experiment. Topics include how factors from the environment alter gene expression how molecules record a cell's experiences how behavior affects gene expression THE NEW SCIENCE OF ADDICTION A physiologic and molecular look at a chronic disease involving many factors
Enzymes of DNA Replication
http://www.dnareplication.info/enzymesofdnareplication.php Competition: low
Exonuclease (DNA Polymerase I): Finds and removes the RNA Primers DNA Ligase: Adds phosphate in the remaining gaps of the phosphate - sugar backbone Nucleases: Remove wrong nucleotides from the daughter strand
http://www.dnatutorial.com/ReplicationOfDNA.shtml Competition: low
The result of this side's discontiguous replication is the production of a series of short sections of new DNA called Okazaki fragments (after their discoverer, a Japanese researcher). The template strand is ALWAYS read in the 3' to 5' direction (that is, starting from the 3' end of the template and reading the nucleotides in order toward the 5' end of the template)
nucleotide: Definition from Answers.com
http://www.answers.com/topic/nucleotide Competition: low
The color scheme is as follows: enzymes, coenzymes, substrate names, inorganic molecules Main article: Pyrimidine metabolism The synthesis of the pyrimidines CTP and UTP occurs in the cytoplasm and starts with the formation of carbamoyl phosphate from glutamine and CO2. Nucleotides are biological molecules that form the building blocks of nucleic acids (DNA and RNA) and serve to carry packets of energy within the cell (ATP)
DNA Replication
http://homepages.rpi.edu/~bellos/dna_replicn'.htm Competition: low
We will not study DNA Repair, Recombination, or Mobile Elements but these are covered well in your text as well as in other courses that you are taking. MBDs can bind to 5-methylated cytosine residues because these project into the major groove of DNA where DNA-protein interactions can occur without disrupting the double helical structure
What experiments did crick and watson do to come up with their model of the double stranded helix DNA? - Yahoo! Answers
http://answers.yahoo.com/question/index?qid=20070904004618AA84HMG Competition: low
Another key to finding the correct structure of DNA was the so-called Chargaff ratios, experimentally determined ratios of the nucleotide subunits of DNA: the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine. The Watson and Crick discovery of the DNA double helix structure was made possible by their correct interpretation of the significance of experimental results that had been obtained by others
DNA Science
http://homepages.ius.edu/gkirchne/DNA.htm Competition: low
RNA polymerase can only catalyze the formation of the phosphodiester bonds in a 5' to 3' direction (just like DNA polymerase) and the DNA and newly made RNA strand are antiparallel (just like double stranded DNA). UUU - Phe UUC - Phe UUA - Leu UUG - Leu UCU - Ser UCC - Ser UCA - Ser UCG - Ser UAU - Tyr UAC - Tyr UAA - Stop UAG - Stop UGU - Cys UGC - Cys UGA - Stop UGG - Trp CUU - Leu CUC - Leu CUA - Leu CUG - Leu CCU - Pro CCC - Pro CCA - Pro CCG - Pro CAU - His CAC - His CAA - Gln CAG - Gln CGU - Arg CGC - Arg CGA - Arg CGG - Arg AUU - Ile AUC - Ile AUA - Ile AUG - Met (Start) ACU - Thr ACC - Thr ACA - Thr ACG - Thr AAU - Asn AAC - Asn AAA - Lys AAG - Lys AGU - Ser AGC - Ser AGA - Arg AGG - Arg GUU - Val GUC - Val GUA - Val GUG - Val GCU - Ala GCC - Ala GCA - Ala GCG - Ala GAU - Asp GAC - Asp GAA - Glu GAG - Glu GGU - Gly GGC - Gly GGA - Gly GGG - Gly Outline of the Process of Translation Initiation The mRNA transcribed from the DNA travels through a nuclear pore to the cytoplasm of the cell
http://quizlet.com/3133224/dna-replication-flash-cards/ Competition: low
DNA Polymerase III Adds new DNA nucleotides to a replicating DNA molecule DNA Polymerase II enzyme that proofreads the daughter strand of replicated DNA and corrects any base pairing errors Ligase Glues together fragments of DNA Okasaki fragments short segments of DNA synthesized in the lagging strand during DNA replication Primase An enzyme that joins RNA nucleotides to make the primer
http://www.mrothery.co.uk/genetics/dnanotes.htm Competition: low
The Bases: Adenine (A), Thymine (T), Cytosine (C), Guanine (G) and Uracil (U) Nucleotide Polymerisation: Nucleotides polymerise by forming bonds between the carbon of the sugar and an oxygen atom of the phosphate. If a single amino acid is changed to a similar one, then the protein structure and function may be unchanged, but if an amino acid is changed to a very different one, then the structure and function of the protein will be very different
What role do DNA helicases have in DNA replication
http://wiki.answers.com/Q/What_role_do_DNA_helicases_have_in_DNA_replication Competition: low
Helicases unwind the double helix at the replication fork and single strand binding proteins (SSB What does DNA helicase do during replication? DNA helicase breaks the hydrogen bonds between the paired nitrogen bases in the DNA molecule. Improve Answer History Related Answers: What role do DNA helicases have in DNA replication? DNA helicases break the hydrogen bonds in the DNA molecule What is the role of DNA helicase in DNA replication? DNA helicase "unzips" a strand of DNA, which means that removes the hydrogen bonds between complemen The roles of DNA helicase and DNA polymerase in DNA replication? The helicase unwinds the DNA double-helix so that the DNA polymerase(s) can create duplicate copies Explain the replication of DNA Include the role of helicase? 1
Steps of DNA Replication
http://www.dnareplication.info/stepsofdnareplication.php Competition: low
We can easily understand that in the last section of the lagging strand, when the RNA primer is removed, it is not possible for the DNA Polymerase to seal the gap (because there is no primer). The gaps are closed with the action of DNA Polymerase (adds complementary nucleotides to the gaps) and DNA Ligase (adds phosphate in the remaining gaps of the phosphate - sugar backbone)
http://nucleotideresearch.com/chptr05.html Competition: low
They biosynthesis of nucleotides is under very tight control since energy is wasted when making too much, and DNA replication and cellular metabolism is slowed down when making too little
http://dnareplicationtt.blogspot.com/ Competition: low
The gene sequence is copied into messenger RNA (mRNA) - The mRNA is single stranded and has 4 nucleotide like DNA, but instead of Thymine (T) it has Uracil (U)
How do we Sequence DNA?
http://seqcore.brcf.med.umich.edu/doc/educ/dnapr/sequencing.html Competition: low
A 'Scan' of one gel lane: We don't even have to 'read' the sequence from the gel - the computer does that for us! Below is an example of what the sequencer's computer shows us for one sample. Our sequencing machine reads just a drop in the bucket compared to what we really need! To do it, we break the entire genome up into manageable pieces and sequence them
http://www.elmhurst.edu/~chm/vchembook/582dnarep.html Competition: low
The replication of DNA is guided by the base pairing principle so that no other heterocyclic amine nucleotide can hydrogen bond and fit correctly with cytosine. Template: A C T A G G Answer Complementary T G A T C C Click for larger image DNA Replication: Although details of DNA replication is not thoroughly understood, because so many molecules are involved in the process
DNA Replication
http://www.emunix.emich.edu/~rwinning/genetics/replic2.htm Competition: low
The DNA serves two purposes: 1) it serves as a template for the synthesis of the new DNA (the template determines the sequence of the new DNA strand, through the specificity of base pairing), and 2) it serves as a primer for DNA synthesis. This means that replication proceeds in opposite directions away from the origin: Note in the diagram how each original DNA molecule branches, or forks, at the point where replication is occurring
DNA Replication Mechanisms - Molecular Biology of the Cell - NCBI Bookshelf
http://www.ncbi.nlm.nih.gov/books/NBK26850/ Competition: low
The DNA helix is opened by a DNA polymerase molecule clamped on the leading strand, acting in concert with one or more DNA helicase molecules running along the strands in front of it. Similarly, the DNA polymerase molecule that synthesizes DNA on the lagging strand moves in concert with the rest of the proteins, synthesizing a succession of new Okazaki fragments
http://quizlet.com/7610116/biol-3200-chapter-11-dna-replication-flash-cards/ Competition: low
True; In particular, eukaryotic cells have larger, linear chromosomes, the chromatin is tightly packed within nucleosomes, and cell cycle regulation is much more complicated. At the start of their experiment, generation 0, they switched the bacteria to a medium that contained only 14N and then collected samples of cells after various time points
DNA from the Beginning - An animated primer of 75 experiments that made modern genetics.
http://dnaftb.org/ Competition: low
Go to Weed to Wonder Mailing List Sign-up to receive email newsletters on dnalc resources and educational opportunities! Name: Email: State: Gene News - Hidden genetic code for better designer genes Find the DNALC on: Language options: Home Site Map Scientists Glossary Feedback Awards Credits Blog Funded by The Josiah Macy, Jr
http://www.nature.com/scitable/nated/article?action=showContentInPopup&contentPK=413 Competition: low
In contrast, in linear DNA replication, there is always a small gap left at the very end of the chromosome because of the lack of a 3'-OH group for replacement nucleotides to bind. Researchers typically utilize simple bacterial cells in their experiments, but they still do not have all the answers, particularly when it comes to eukaryotic replication
How does the DNA replication takes place
http://wiki.answers.com/Q/How_does_the_DNA_replication_takes_place Competition: low
Last edit by Vernontkh Answer History Related Answers: How does the DNA replication takes place? AnswerWhen DNA replication takes place weaker hydrogen bonds that join complementary bonds together Where does DNA replication take place? DNA replication takes place in NUCLEUS When does DNA replication take place? DNA replication occurs during the synthesis phase of interphase of the cell cycle
http://www.pbs.org/wgbh/aso/tryit/dna/ Competition: low
DNA Replication All Wound Up Protein Synthesis Glossary Related People and Discoveries entries Francis Crick Rosalind Franklin Drugs developed for leukemia (relevant research) Watson and Crick describe structure of DNA Amino acids are created in laboratory If you are having trouble accessing the DNA Workshop activity, try the non-Javascript version
DNA Replication
http://www.austincc.edu/emeyerth/dnarep.htm Competition: low
In this manner, the cell ends up with two identical molecules of the original DNA, with each molecule containing one strand from the original piece of DNA and one newly synthesized strand. This enzyme first binds to a specific site on the DNA known as the origin of replication (prokaryotes have only a single origin on their chromosome while eukaryotes have several on each of their chromosomes) and separates the strands - this allows the DNA polymerase to bind
What does it mean to say that DNA replication is semiconservative? - Yahoo! Answers
http://answers.yahoo.com/question/index?qid=20080511213021AAWIt4j Competition: low
Member since: May 11, 2008 Total points: 120 (Level 1) Add Contact Block During DNA replication each strand of DNA formes a newer strand along its length
DNA replication - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/DNA_replication Competition: low
The polymerase chain reaction (PCR), a common laboratory technique, cyclically applies such artificial synthesis to amplify a specific target DNA fragment from a pool of DNA. Because eukaryotes have linear chromosomes, DNA replication is unable to reach the very end of the chromosomes, but ends at the telomere region of repetitive DNA close to the end
Step up to the virtual lab bench and see how it works! GEL ELECTROPHORESIS Have you ever wondered how scientists work with tiny molecules that they can't see? Here's your chance to try it yourself! Sort and measure DNA strands by running your own gel electrophoresis experiment. Topics include how factors from the environment alter gene expression how molecules record a cell's experiences how behavior affects gene expression THE NEW SCIENCE OF ADDICTION A physiologic and molecular look at a chronic disease involving many factors
Enzymes of DNA Replication
Exonuclease (DNA Polymerase I): Finds and removes the RNA Primers DNA Ligase: Adds phosphate in the remaining gaps of the phosphate - sugar backbone Nucleases: Remove wrong nucleotides from the daughter strand
The result of this side's discontiguous replication is the production of a series of short sections of new DNA called Okazaki fragments (after their discoverer, a Japanese researcher). The template strand is ALWAYS read in the 3' to 5' direction (that is, starting from the 3' end of the template and reading the nucleotides in order toward the 5' end of the template)
nucleotide: Definition from Answers.com
The color scheme is as follows: enzymes, coenzymes, substrate names, inorganic molecules Main article: Pyrimidine metabolism The synthesis of the pyrimidines CTP and UTP occurs in the cytoplasm and starts with the formation of carbamoyl phosphate from glutamine and CO2. Nucleotides are biological molecules that form the building blocks of nucleic acids (DNA and RNA) and serve to carry packets of energy within the cell (ATP)
DNA Replication
We will not study DNA Repair, Recombination, or Mobile Elements but these are covered well in your text as well as in other courses that you are taking. MBDs can bind to 5-methylated cytosine residues because these project into the major groove of DNA where DNA-protein interactions can occur without disrupting the double helical structure
What experiments did crick and watson do to come up with their model of the double stranded helix DNA? - Yahoo! Answers
Another key to finding the correct structure of DNA was the so-called Chargaff ratios, experimentally determined ratios of the nucleotide subunits of DNA: the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine. The Watson and Crick discovery of the DNA double helix structure was made possible by their correct interpretation of the significance of experimental results that had been obtained by others
DNA Science
RNA polymerase can only catalyze the formation of the phosphodiester bonds in a 5' to 3' direction (just like DNA polymerase) and the DNA and newly made RNA strand are antiparallel (just like double stranded DNA). UUU - Phe UUC - Phe UUA - Leu UUG - Leu UCU - Ser UCC - Ser UCA - Ser UCG - Ser UAU - Tyr UAC - Tyr UAA - Stop UAG - Stop UGU - Cys UGC - Cys UGA - Stop UGG - Trp CUU - Leu CUC - Leu CUA - Leu CUG - Leu CCU - Pro CCC - Pro CCA - Pro CCG - Pro CAU - His CAC - His CAA - Gln CAG - Gln CGU - Arg CGC - Arg CGA - Arg CGG - Arg AUU - Ile AUC - Ile AUA - Ile AUG - Met (Start) ACU - Thr ACC - Thr ACA - Thr ACG - Thr AAU - Asn AAC - Asn AAA - Lys AAG - Lys AGU - Ser AGC - Ser AGA - Arg AGG - Arg GUU - Val GUC - Val GUA - Val GUG - Val GCU - Ala GCC - Ala GCA - Ala GCG - Ala GAU - Asp GAC - Asp GAA - Glu GAG - Glu GGU - Gly GGC - Gly GGA - Gly GGG - Gly Outline of the Process of Translation Initiation The mRNA transcribed from the DNA travels through a nuclear pore to the cytoplasm of the cell
DNA Polymerase III Adds new DNA nucleotides to a replicating DNA molecule DNA Polymerase II enzyme that proofreads the daughter strand of replicated DNA and corrects any base pairing errors Ligase Glues together fragments of DNA Okasaki fragments short segments of DNA synthesized in the lagging strand during DNA replication Primase An enzyme that joins RNA nucleotides to make the primer
The Bases: Adenine (A), Thymine (T), Cytosine (C), Guanine (G) and Uracil (U) Nucleotide Polymerisation: Nucleotides polymerise by forming bonds between the carbon of the sugar and an oxygen atom of the phosphate. If a single amino acid is changed to a similar one, then the protein structure and function may be unchanged, but if an amino acid is changed to a very different one, then the structure and function of the protein will be very different
What role do DNA helicases have in DNA replication
Helicases unwind the double helix at the replication fork and single strand binding proteins (SSB What does DNA helicase do during replication? DNA helicase breaks the hydrogen bonds between the paired nitrogen bases in the DNA molecule. Improve Answer History Related Answers: What role do DNA helicases have in DNA replication? DNA helicases break the hydrogen bonds in the DNA molecule What is the role of DNA helicase in DNA replication? DNA helicase "unzips" a strand of DNA, which means that removes the hydrogen bonds between complemen The roles of DNA helicase and DNA polymerase in DNA replication? The helicase unwinds the DNA double-helix so that the DNA polymerase(s) can create duplicate copies Explain the replication of DNA Include the role of helicase? 1
Steps of DNA Replication
We can easily understand that in the last section of the lagging strand, when the RNA primer is removed, it is not possible for the DNA Polymerase to seal the gap (because there is no primer). The gaps are closed with the action of DNA Polymerase (adds complementary nucleotides to the gaps) and DNA Ligase (adds phosphate in the remaining gaps of the phosphate - sugar backbone)
They biosynthesis of nucleotides is under very tight control since energy is wasted when making too much, and DNA replication and cellular metabolism is slowed down when making too little
http://dnareplicationtt.blogspot.com/ Competition: lowThe gene sequence is copied into messenger RNA (mRNA) - The mRNA is single stranded and has 4 nucleotide like DNA, but instead of Thymine (T) it has Uracil (U)
How do we Sequence DNA?
A 'Scan' of one gel lane: We don't even have to 'read' the sequence from the gel - the computer does that for us! Below is an example of what the sequencer's computer shows us for one sample. Our sequencing machine reads just a drop in the bucket compared to what we really need! To do it, we break the entire genome up into manageable pieces and sequence them
The replication of DNA is guided by the base pairing principle so that no other heterocyclic amine nucleotide can hydrogen bond and fit correctly with cytosine. Template: A C T A G G Answer Complementary T G A T C C Click for larger image DNA Replication: Although details of DNA replication is not thoroughly understood, because so many molecules are involved in the process
DNA Replication
The DNA serves two purposes: 1) it serves as a template for the synthesis of the new DNA (the template determines the sequence of the new DNA strand, through the specificity of base pairing), and 2) it serves as a primer for DNA synthesis. This means that replication proceeds in opposite directions away from the origin: Note in the diagram how each original DNA molecule branches, or forks, at the point where replication is occurring
DNA Replication Mechanisms - Molecular Biology of the Cell - NCBI Bookshelf
The DNA helix is opened by a DNA polymerase molecule clamped on the leading strand, acting in concert with one or more DNA helicase molecules running along the strands in front of it. Similarly, the DNA polymerase molecule that synthesizes DNA on the lagging strand moves in concert with the rest of the proteins, synthesizing a succession of new Okazaki fragments
True; In particular, eukaryotic cells have larger, linear chromosomes, the chromatin is tightly packed within nucleosomes, and cell cycle regulation is much more complicated. At the start of their experiment, generation 0, they switched the bacteria to a medium that contained only 14N and then collected samples of cells after various time points
DNA from the Beginning - An animated primer of 75 experiments that made modern genetics.
Go to Weed to Wonder Mailing List Sign-up to receive email newsletters on dnalc resources and educational opportunities! Name: Email: State: Gene News - Hidden genetic code for better designer genes Find the DNALC on: Language options: Home Site Map Scientists Glossary Feedback Awards Credits Blog Funded by The Josiah Macy, Jr
In contrast, in linear DNA replication, there is always a small gap left at the very end of the chromosome because of the lack of a 3'-OH group for replacement nucleotides to bind. Researchers typically utilize simple bacterial cells in their experiments, but they still do not have all the answers, particularly when it comes to eukaryotic replication
How does the DNA replication takes place
Last edit by Vernontkh Answer History Related Answers: How does the DNA replication takes place? AnswerWhen DNA replication takes place weaker hydrogen bonds that join complementary bonds together Where does DNA replication take place? DNA replication takes place in NUCLEUS When does DNA replication take place? DNA replication occurs during the synthesis phase of interphase of the cell cycle
DNA Replication All Wound Up Protein Synthesis Glossary Related People and Discoveries entries Francis Crick Rosalind Franklin Drugs developed for leukemia (relevant research) Watson and Crick describe structure of DNA Amino acids are created in laboratory If you are having trouble accessing the DNA Workshop activity, try the non-Javascript version
DNA Replication
In this manner, the cell ends up with two identical molecules of the original DNA, with each molecule containing one strand from the original piece of DNA and one newly synthesized strand. This enzyme first binds to a specific site on the DNA known as the origin of replication (prokaryotes have only a single origin on their chromosome while eukaryotes have several on each of their chromosomes) and separates the strands - this allows the DNA polymerase to bind
What does it mean to say that DNA replication is semiconservative? - Yahoo! Answers
Member since: May 11, 2008 Total points: 120 (Level 1) Add Contact Block During DNA replication each strand of DNA formes a newer strand along its length
DNA replication - Wikipedia, the free encyclopedia
The polymerase chain reaction (PCR), a common laboratory technique, cyclically applies such artificial synthesis to amplify a specific target DNA fragment from a pool of DNA. Because eukaryotes have linear chromosomes, DNA replication is unable to reach the very end of the chromosomes, but ends at the telomere region of repetitive DNA close to the end
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