MS-LS3-1

Develop and use a model to describe why structural changes to genes (mutations) located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism.

  1. Genetics

    Explainer: Why scientists sometimes ‘knock out’ genes

    How do we learn what a particular molecule does in the body? To find out, scientists often 'knock out' the gene that makes it. Here’s how.

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  2. Genetics

    Explainer: How CRISPR works

    Scientists are using a tool called CRISPR to edit DNA in all types of cells.

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  3. Genetics

    Scientists Say: Chromosome

    This threadlike structure is made of DNA wrapped around protein. It allows the 3 billion base pairs in human DNA to stay neatly packaged in a cell.

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  4. Tech

    Tweaked germs glow to pinpoint buried landmines

    Finding landmines could become much safer with a new technology. It uses genetically modified bacteria that glow under laser light.

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  5. Health & Medicine

    Analyze This: Zika and microcephaly

    Data from pregnant women with Zika in Colombia helped scientists probe whether Zika causes birth defects.

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  6. Archaeology

    Fossils point to Neandertal diets — and medicine use

    Whether Neandertals were largely meat-eaters or vegans depended on their environment, fossils now suggest. Their teeth also indicate they used natural medicines.

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  7. Life

    How to make a ‘three-parent’ baby

    Scientists combined an egg, sperm and some donor DNA: The end result: what appears to be healthy babies.

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  8. Genetics

    Explainer: How PCR works

    The polymerase chain reaction, or PCR, is like a DNA-copying machine. It duplicates genetic material over and over. Here’s how.

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  9. Genetics

    Scientists find genes that make some kids’ hair uncombable

    Scientists have pinpointed three genes that cause ‘uncombable hair syndrome’ in some kids.

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  10. Genetics

    World’s tallest corn towers nearly 14 meters

    Short nights and a genetic tweak helped novel corn reach record heights.

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  11. Health & Medicine

    Zika birth defects: Concerns spread from head to toe

    Zika infections may trigger problems well beyond babies born with small heads and brains. Scientists have begun linking a range of head-to-toe health ails to the virus.

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  12. Animals

    Tasmanian devils begin to resist infectious cancer

    A deadly contagious cancer is spreading among Tasmanian devils. But the animals are evolving resistance, a new study finds.

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