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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaBiology concept

These structures package DNA; a typical human body cell contains twenty-three pairs.

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Your new ahaChromosomes

A chromosome contains DNA associated with proteins. Source: Chromosome ↗

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More from From Cells to Species

A few more worth knowing.

  1. 09His pea-plant experiments revealed fundamental patterns of inheritance.RECALL
    Gregor Mendel

    Gregor Mendel's pea plant experiments identified inheritance patterns now known as Mendelian genetics.

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  2. 10This change in a DNA sequence can have neutral, harmful, or beneficial effects.RECALL
    Mutation

    A mutation is a random change in DNA that can be neutral, harmful, or occasionally beneficial.

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  3. 11This regulatory process maintains stable internal conditions, such as body temperature.RECALL
    Homeostasis

    Homeostasis lets an organism maintain stable internal conditions, such as the body regulating its own temperature.

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