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nucleic acid
nucleic acid

... (3) The diameter of the double helix is 2 nm, the distance between two base is 0.34 nm, each turn of the helix involves 10 bases pairs, 3,4 nm. ...
Slide 1
Slide 1

... (i.e. Red and White hair are dominant in cattle. A purebred red is crossed with a purebred white cow and results in a cow that is roan in colorhas both red and white hair) ...
DNA
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... from 20 to more than 200 basepairs. ...
Ch 19 Genomics
Ch 19 Genomics

... Short stretches of DNA base pairs that are repeated at multiple loci in the chromosomes. GAGGAG ...
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Cloning and PCR File

... 2. Annealing involves cooling the single strands of DNA and mixing them with short DNA segments called primers. Primers have base sequences that are complementary to segments of the single DNA strands. As a result, bonds form between the DNA strands and primers. 3. Extension occurs when an enzyme (T ...
Web Quest: DNA Genetics Name
Web Quest: DNA Genetics Name

... Synthesis” (upper right button). This is where you transcribe DNA to RNA and then have a ribosome read each ‘Codon” (which is triplet of nucleotides/bases), in order to put the amino acids together to form a protein! This process is called translation. When you transcribe DNA into an RNA molecule di ...
Biology 303 EXAM II 3/14/00 NAME
Biology 303 EXAM II 3/14/00 NAME

... B. a deoxyribose. C. a ribose. D. none of the above. ...
Biology 303 EXAM II 3/14/00 NAME
Biology 303 EXAM II 3/14/00 NAME

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I. DNA A. WHAT IS IT?
I. DNA A. WHAT IS IT?

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Repair of Damaged DNA

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S1.A hypothetical sequence at the beginning of an mRNA molecule

... 4. In the chemical analysis of the DNA from different species, the work of Chargaff indicated that the amount of adenine equaled the amount of thymine and that the amount of cytosine equaled the amount of guanine. 5. In the early 1950s, Linus Pauling proposed that regions of proteins can fold into a ...
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Final Exam Study Guide Ms. Thomas Spring 2011

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Mutation and DNA

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CH 14 notes - Lincoln Park High School
CH 14 notes - Lincoln Park High School

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Microbiology Exam II - University of Evansville Faculty Web sites
Microbiology Exam II - University of Evansville Faculty Web sites

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Protein Synthesis Notes Review
Protein Synthesis Notes Review

... What brings amino acids to the ribosome? How many different amino acids can a tRNA carry? What are the three unpaired bases at the bottom of a tRNA called? What type of bond forms between amino acids? What do the codons on mRNA specify? What are the three main steps of protein synthesis? Put the fol ...
DNA PowerPoint
DNA PowerPoint

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Genes and Evolution - Mad River Local Schools
Genes and Evolution - Mad River Local Schools

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Study Guide for DNA Structure and Replication
Study Guide for DNA Structure and Replication

... o Four different nucleotides exist: A (adenine), T (thymine), C (cytosine), and G (guanine). They are identical in structure except for their bases. (note: nucleotides and their bases can be identified by their single letter abbreviation; full names are not required)  A single strand of DNA is a c ...
Glucose - St. Bonaventure College and High School
Glucose - St. Bonaventure College and High School

... The allele for normal body pigmentation is dominant (D) and the allele for albino is recessive (d). Explain by means of a genetic diagram, the expected phenotypic ratio of the offspring when individual 7 is married to individual 10. ...
Study Guide Genetics Final 2014
Study Guide Genetics Final 2014

... 5. Where are proteins synthesized (in the process of translation) and how is this done? Explain each step. ...
Expressing Genetic Information
Expressing Genetic Information

... 2. What is stored in the chromatin, the genetic material of DNA? 3. Genes are discrete units of DNA that act in a certain way. What is that way? 4. Compare and contrast DNA with RNA. 5. What is the genetic code? 6. What is the Human Genome Project? 7. What percentage of RNA is rRNA? Why is it so hig ...
Genetic Technology
Genetic Technology

...  Process by which the DNA fragments are put into a gel with electricity running through it forcing the (-) charged fragments to move towards the (+) end of the gel box  The smaller the fragment the faster it moves, the larger the fragment the slower it moves ...
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Nucleic acid double helix



In molecular biology, the term double helix refers to the structure formed by double-stranded molecules of nucleic acids such as DNA. The double helical structure of a nucleic acid complex arises as a consequence of its secondary structure, and is a fundamental component in determining its tertiary structure. The term entered popular culture with the publication in 1968 of The Double Helix: A Personal Account of the Discovery of the Structure of DNA, by James Watson.The DNA double helix polymer of nucleic acids, held together by nucleotides which base pair together. In B-DNA, the most common double helical structure, the double helix is right-handed with about 10–10.5 base pairs per turn. This translates into about 20-21 nucleotides per turn. The double helix structure of DNA contains a major groove and minor groove. In B-DNA the major groove is wider than the minor groove. Given the difference in widths of the major groove and minor groove, many proteins which bind to B-DNA do so through the wider major groove.
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