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  2. H&R Block - Wikipedia

    en.wikipedia.org/wiki/H&R_Block

    H&R Block, Inc., or H&R Block, is an American tax preparation company operating in Canada, the United States, and Australia. The company was founded in 1955 by brothers Henry W. Bloch and Richard Bloch . As of 2018, H&R Block operates approximately 12,000 retail tax offices staffed by tax professionals worldwide.

  3. Triple-stranded DNA - Wikipedia

    en.wikipedia.org/wiki/Triple-stranded_DNA

    The arrows are going from the 5' end to the 3' end. ( PDB: 1BWG ) Triple-stranded DNA (also known as H-DNA or Triplex-DNA) is a DNA structure in which three oligonucleotides wind around each other and form a triple helix. In triple-stranded DNA, the third strand binds to a B-form DNA (via Watson–Crick base-pairing) double helix by forming ...

  4. Nucleic acid structure - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid_structure

    A nucleic acid sequence is the order of nucleotides within a DNA (GACT) or RNA (GACU) molecule that is determined by a series of letters. Sequences are presented from the 5' to 3' end and determine the covalent structure of the entire molecule. Sequences can be complementary to another sequence in that the base on each position is complementary ...

  5. Molecular models of DNA - Wikipedia

    en.wikipedia.org/wiki/Molecular_models_of_DNA

    That same year, Maurice F. Wilkins, A. Stokes and H.R. Wilson, reported the first X-ray patterns of in vivo B-DNA in partially oriented salmon sperm heads. [7] The development of the first correct double helix molecular model of DNA by Crick and Watson may not have been possible without the biochemical evidence for the nucleotide base-pairing ...

  6. H&R Block Tax Software - Wikipedia

    en.wikipedia.org/wiki/H&R_Block_Tax_Software

    H&R Block Tax Software. H&R Block Tax Software, formerly called H&R Block at Home, is a set of software packages for American income tax preparation offered by H&R Block. They are a main competitor of TurboTax and TaxAct. [1] As of 2014, both the online and software versions of the product go by the flagship name, H&R Block. [2]

  7. Nucleotide - Wikipedia

    en.wikipedia.org/wiki/Nucleotide

    This nucleotide contains the five-carbon sugar deoxyribose (at center), a nucleobase called adenine (upper right), and one phosphate group (left). The deoxyribose sugar joined only to the nitrogenous base forms a Deoxyribonucleoside called deoxyadenosine, whereas the whole structure along with the phosphate group is a nucleotide, a constituent of DNA with the name deoxyadenosine monophosphate.

  8. Missouri AG sues H&R Block, accusing KC tax prep giant of ...

    www.aol.com/news/missouri-ag-sues-h-r-205201696.html

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  9. Nucleic acid double helix - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid_double_helix

    The double-helix model of DNA structure was first published in the journal Nature by James Watson and Francis Crick in 1953, (X,Y,Z coordinates in 1954) based on the work of Rosalind Franklin and her student Raymond Gosling, who took the crucial X-ray diffraction image of DNA labeled as "Photo 51", and Maurice Wilkins, Alexander Stokes, and Herbert Wilson, and base-pairing chemical and ...

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