Genetics
Explainer: How DNA testing works
Lots of companies will now test DNA from people and their pets. How do these gene-sequencing techniques work? We explain.
HS-LS1-1
Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.
More Stories in HS-LS1-1
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AnimalsOrca snot leads to a whale of a science-fair project
DNA found in the mucus of orcas suggests that even though the traits of family pods may differ, these marine mammals all appear to belong to a single species.
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LifeInked mice hint at how tattoos live on
Tattooed mice challenge our current understanding of how tattoos stay in humans.
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ChemistryCool Jobs: Diving for new medicines
Scientists mix research with underwater adventure as they search the oceans for new chemicals to treat infections, cancer and more.
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GeneticsExplainer: DNA hunters
Snippets of DNA can be left behind by a passing organism. Some researchers now act as wildlife detectives to identify the sources of such cast-off DNA.
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GeneticsExplainer: How CRISPR works
Scientists are using a tool called CRISPR to edit DNA in all types of cells.
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GeneticsScientists 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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GeneticsHow to view tiny parts of DNA? Make them ‘blink’
A new technique can image nanoscale structures in cells without hurting them. No dyes needed. All you have to do is stimulate them with the right color of light.