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Related Experiment Videos

8-classtype tallying device and counter.

J N Adams

    Applied Microbiology
    |September 1, 1974
    PubMed
    Summary

    A new electronic device using transistor-transistor-logic integrated circuits simplifies phenotype counting for genetic research. This invention significantly reduces labor and improves accuracy in tallying recombinant progeny, making complex genetic analysis more efficient.

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    Area of Science:

    • Biotechnology
    • Genetics
    • Instrumentation

    Background:

    • Accurate counting of phenotypes in recombinant progeny is crucial for genetic studies.
    • Manual counting methods are labor-intensive and prone to errors.
    • Existing tools may not efficiently handle multiply characterized colonies.

    Purpose of the Study:

    • To design and construct an electronic device for accumulating counts of eight classtypes.
    • To enable direct tallying of individual phenotypes for recombinant progeny with three scorable genes.
    • To reduce tedium and labor while increasing accuracy in differential counts.

    Main Methods:

    • Utilized transistor-transistor-logic integrated circuits as primary building blocks.
    • Incorporated three encoders (X, Y, Z) for classtype selection and memory counter access (0-99 counts).
    • Configured encoders as input equivalents for three genes to tally phenotypes.

    Main Results:

    • The device successfully accumulated counts for eight classtypes with selectable memory counters.
    • Enabled direct phenotype tallying for recombinant progeny with three scorable genes.
    • Demonstrated a fourfold reduction in labor and increased accuracy for differential counts, including multiply characterized colonies.

    Conclusions:

    • The designed electronic device offers a significant improvement in efficiency and accuracy for genetic phenotype counting.
    • The instrument is suitable for individual laboratory fabrication and use.
    • This innovation streamlines genetic analysis, particularly for recombinant progeny studies.

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