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Thread: About dna

  1. #1 About dna 
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    hello everyone!
    I would like to know the difference among gene,DNA and a chromosome


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    Moderator Moderator Cogito Ergo Sum's Avatar
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    Chromosomes are large, supercoiled strings of DNA.
    Some parts of the chromosomes contain DNA sequences that contain information for protein production. These specific sequences are called 'genes'.



    "The only safe rule is to dispute only with those of your acquaintance of whom you know that they possess sufficient intelligence and self-respect not to advance absurdities; to appeal to reason and not to authority, and to listen to reason and yield to it; and, finally, to be willing to accept reason even from an opponent, and to be just enough to bear being proved to be in the wrong."

    ~ Arthur Schopenhauer, The Art of Being Right: 38 Ways to Win an Argument (1831), Stratagem XXXVIII.
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    Brassica oleracea Strange's Avatar
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    DNA is the actual chemical compound that genes are made of: deoxyribonucleic acid. The DNA molecule is a long chain of small units (nucleotides), each containing a "base" which can be guanine, adenine, thymine, or cytosine (G, A, T or C).

    Each group of three bases forms a "codon" which encodes for a specific amino acid to be added to a protein. A sequence of codons make up a gene which describes a protein made from the corresponding amino acid.

    A strand of DNA, which is a single huge molecule, contains long sequence of genes and makes up a chromosome (which also contains proteins and other things to give it structure).

    Several chromosomes make up the complete genetic "blueprint" or genome of the organism.
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    Forum Ph.D. merumario's Avatar
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    Just to know, chromosomes are 46 in numbers 23 from each from both parents#
    "I am sorry for making this letter longer than usual.I actually lacked the time to make it shorter."###
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    Moderator Moderator Cogito Ergo Sum's Avatar
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    Quote Originally Posted by merumario View Post
    Just to know, chromosomes are 46 in numbers 23 from each from both parents#

    In Homo sapiens.
    "The only safe rule is to dispute only with those of your acquaintance of whom you know that they possess sufficient intelligence and self-respect not to advance absurdities; to appeal to reason and not to authority, and to listen to reason and yield to it; and, finally, to be willing to accept reason even from an opponent, and to be just enough to bear being proved to be in the wrong."

    ~ Arthur Schopenhauer, The Art of Being Right: 38 Ways to Win an Argument (1831), Stratagem XXXVIII.
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    Forum Ph.D. merumario's Avatar
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    Quote Originally Posted by Cogito Ergo Sum View Post
    Quote Originally Posted by merumario View Post
    Just to know, chromosomes are 46 in numbers 23 from each from both parents#

    In Homo sapiens.

    Yeah# thanks for the follow up#
    "I am sorry for making this letter longer than usual.I actually lacked the time to make it shorter."###
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