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Notes - DNA Structure
Notes - DNA Structure

... Form Systems & Have Systems (related parts) Structure & Function are Related ...
chapter 16
chapter 16

... • DNA polymerases proofread nucleotides & immediately replace any incorrect pairing • Some mismatched nucleotides evade proofreading or occur after DNA synthesis is complete – damaged • Mismatch repair – cells use special enzymes to fix incorrect nucleotide pairs • 130 repairing enzymes identified i ...
DNA Replication
DNA Replication

... • The Instructions for your growth is in the DNA • As a multicellular organism, you need instructions in every cell. • Before MITOSIS and MEIOSIS, your DNA copies itself so that each new cell has an exact copy: When? During… INTERPHASE ...
Activity 3.3.4 DNA Models
Activity 3.3.4 DNA Models

...  BLACK linkage = Deoxyribose sugar group 3. Create the strands of the DNA molecule by connecting the phosphate groups to deoxyribose sugar groups. The strands are the side rails of the DNA ladder and phosphates and deoxyribose sugar groups assemble in an alternating pattern. You want to create two ...
Organic molecules are the`molecules of life` which are contained in
Organic molecules are the`molecules of life` which are contained in

... be: AGT and CGA. DNA is made from other DNA through a process called replication. In replication, each strand of DNA is used as a pattern to make a new strand. That way, the old DNA and the new DNA are identical copies of each other. 13. What is the name of a three-base word in DNA?_________________ ...
DNA: The Carrier of Genetic Information
DNA: The Carrier of Genetic Information

... follows the helicase as it unwinds. 5. The other side is the lagging strand - its moving away from the helicase ...
DNA
DNA

... turn codes for a trait. Hence you hear it commonly referred to as the gene for baldness or the gene for blue eyes. Meanwhile, DNA is the chemical that genes and chromosomes are made of. It stands for deoxyribonucleic acid. DNA is called a nucleic acid because it was first found in the nucleus. We no ...
Ch13DNA08 - ChemistryVCE
Ch13DNA08 - ChemistryVCE

... bonds between complementary base pairs C & G and T & A. These bases then undergo a condensation polymerisation reaction catalysed by the enzyme DNA polymerase to form two exact copies of the original DNA double helix. ...
View PDF - Mvla.net
View PDF - Mvla.net

... RNA polymerase binds to DNA, separates the strands, then uses one strand as a template to assemble MRNA. 3. Why is translation necessary? Translation assures that the right amino acids are joined together by peptides to form the ...
Section 11-1
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... deoxyribose of one nucleotide to the phosphate group of another • Sugar and phosphate = backbone of DNA • Nitrogeneous base stick out to side ...
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Recombination Chromosome Separations At Anaphase I And II

... o 20-50 x more likely. o Low recombination in heterochromatic regions can lead to tight linkages of markers that are physically distant. Clustering of markers results. RN numbers strongly correlated with SC length. o Each SC has at least one; subsequent RN occur in proportion to SC length. o A stron ...
Nucleic Acids and Protein Synthesis Team – Game – Tournament
Nucleic Acids and Protein Synthesis Team – Game – Tournament

... Nucleic Acids and Protein Synthesis Team – Game – Tournament Questions 1. What is the name of the molecule that stores and transmits the genetic information from one generation of organism to the next? 2. DNA is a polymer formed from subunits called …? 3. Name the three basic parts that make up a DN ...
Quick Links
Quick Links

... FINISH Must all finish (complete S) Must ensure that each piece of DNA is replicated only once Therefore must know where to finish (REPLICON) ...
Document
Document

... • Class I: cut the phosphodiester backbone of one strand, pass the end through, and reseal • Class II: cut both strands, pass some of the remaining DNA helix between the cut strands, and reseal • DNA ______________: a bacterial topoisomerase ...
chapter 24 lecture (ppt file)
chapter 24 lecture (ppt file)

... sequence for a specific gene, and the four nucleotide triphosphates. A thermocycler raises the temperature to 9496 oC to separate the DNA strands, lowers the temperature to 50-56 oC to the primers to hybridize to the DNA, and raises the temperature to 72 oC to allow the Taq polymerase to act. Repeat ...
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poster - GeoGenetics

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TEST DNA stuff 2012 Multiple Choice
TEST DNA stuff 2012 Multiple Choice

... A certain gene codes for a polypeptide that is 120 amino acids long. Approximately how many nucleotides long is the mRNA that codes for this polypeptide likely to be? A. ...
DNA replication
DNA replication

... The “parent” molecule has two complementary strands of DNA. Each is base paired by hydrogen bonding with its specific partner: A with T G with C ...
Ch12and132014
Ch12and132014

... Each strand of DNA double helix has all the info to___________________________by base pairing Strands are complementary In prokaryotes,this begins @single point and proceeds-often in 2 directions In Eukaryotes,DNA replication begins @ 100’s of places,going both directions until complete ____________ ...
No Slide Title
No Slide Title

... of growing chain (condensation rx driven by cleavage of PiPi) ...
DNA structure lab protocol
DNA structure lab protocol

... The extremely long DNA molecule is actually made of a long string of chemical building blocks called “nucleotides.” There are four different nucleotides, which are labeled adenine (A), thymine (T), guanine (G), and cytosine (C). The human genome is made of a sequence of roughly three billion of thes ...
DNA and Protein Synthesis
DNA and Protein Synthesis

... • 2.) Free nucleotides bond with open complementary base pairs • 3.) 2 new strands formed ...
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Chromosomal insertion of foreign DNA
Chromosomal insertion of foreign DNA

... sequences that are exposed upon digestion with a restriction enzyme, or by illegitimate recombination (ie, recombination between imperfectly or even poorly matched DNA duplexes). When the ends of the input DNA molecules are blunt, or have compatible single-strand extensions, we would expect that nei ...
CH. 8
CH. 8

... • Differences • ________________ makes sure each new cell will have ____ complete set of genetic instructions & occurs only once during each round of the cell cycle. • ___________________ could make hundreds or thousands of copies of certain proteins or the rRNA or tRNA molecules need to make ______ ...
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Homologous recombination



Homologous recombination is a type of genetic recombination in which nucleotide sequences are exchanged between two similar or identical molecules of DNA. It is most widely used by cells to accurately repair harmful breaks that occur on both strands of DNA, known as double-strand breaks. Homologous recombination also produces new combinations of DNA sequences during meiosis, the process by which eukaryotes make gamete cells, like sperm and egg cells in animals. These new combinations of DNA represent genetic variation in offspring, which in turn enables populations to adapt during the course of evolution. Homologous recombination is also used in horizontal gene transfer to exchange genetic material between different strains and species of bacteria and viruses.Although homologous recombination varies widely among different organisms and cell types, most forms involve the same basic steps. After a double-strand break occurs, sections of DNA around the 5' ends of the break are cut away in a process called resection. In the strand invasion step that follows, an overhanging 3' end of the broken DNA molecule then ""invades"" a similar or identical DNA molecule that is not broken. After strand invasion, the further sequence of events may follow either of two main pathways discussed below (see Models); the DSBR (double-strand break repair) pathway or the SDSA (synthesis-dependent strand annealing) pathway. Homologous recombination that occurs during DNA repair tends to result in non-crossover products, in effect restoring the damaged DNA molecule as it existed before the double-strand break.Homologous recombination is conserved across all three domains of life as well as viruses, suggesting that it is a nearly universal biological mechanism. The discovery of genes for homologous recombination in protists—a diverse group of eukaryotic microorganisms—has been interpreted as evidence that meiosis emerged early in the evolution of eukaryotes. Since their dysfunction has been strongly associated with increased susceptibility to several types of cancer, the proteins that facilitate homologous recombination are topics of active research. Homologous recombination is also used in gene targeting, a technique for introducing genetic changes into target organisms. For their development of this technique, Mario Capecchi, Martin Evans and Oliver Smithies were awarded the 2007 Nobel Prize for Physiology or Medicine.
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