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.
- 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.
- Health & Medicine
Explainer: What is a hormone?
Various tissues secrete special chemicals, known as hormones. They travel, usually in blood, to a particular distant site where they tell certain cells it’s time to go to work.
- Genetics
Explainer: How CRISPR works
Scientists are using a tool called CRISPR to edit DNA in all types of cells.
- 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.
- Genetics
How 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.
- Genetics
Scientists find genes that make some kids’ hair uncombable
Scientists have pinpointed three genes that cause ‘uncombable hair syndrome’ in some kids.
- Agriculture
World’s tallest corn towers nearly 14 meters
Short nights and a genetic tweak helped novel corn reach record heights.
- Genetics
Scientists Say: eDNA
Animals may escape traps or nets, but they often leave DNA behind in their environment, giving scientists important clues.
- Agriculture
Bananas under attack: Understanding their foes
Fungal blights threaten the world’s most popular fruit. But genetic studies hint at new ways to combat some of these diseases.
- Health & Medicine
Grandparents’ diet could be a weighty issue for grandkids
Australian scientists have found that fat mice can pass on a heightened risk of obesity to their sons and grandsons.
- Animals
Uh oh! Baby fish prefer plastic to real food
Given a choice, baby fish will eat plastic microbeads instead of real food. That plastic stunts their growth and makes them easier prey for predators.
- Computing
DNA can now store images, video and other types of data
Tiny test tubes might one day replace sprawling data-storage centers, thanks to a new way to encode and retrieve information on strands of synthetic DNA.
