Animals
Paw-print DNA lets scientists track out-of-sight polar bears
This environmental DNA can aid in conserving species that are hard or dangerous to observe.
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
- Health & Medicine
Examining Neandertal and Denisovan DNA wins a 2022 Nobel Prize
Svante Pääbo figured out how to examine the genetic material from these hominid ‘cousins’ of modern humans.
- Animals
Living mysteries: This critter has 38 times more DNA than you do
The genomes of salamanders are bloated with genetic “parasites.” That extra DNA slows down their lives and strands them in perpetual childhood.
- Health & Medicine
Explainer: What is sickle cell disease?
Gene mutations can alter an individual’s hemoglobin in ways that curl their blood cells. This can cause painful sickle cell disease.
- Health & Medicine
Explainer: The body’s immune system
An army of cells — and their protein arsenal — work to keep us safe. Several squads of special forces possess unique superpowers to disable or kill intruders.
- Life
Explainer: Cells and their parts
Life as we know it depends on the coordination of structures inside cells — whether a living thing has only a single cell or trillions of them.
- Animals
A new drug mix helps frogs regrow amputated legs
The treatment helped frogs grow working limbs useful for swimming, standing and kicking. It’ll be a while before people can do that.
- Life
Scientists Say: Eukaryote
Eukaryotes are living things whose cells package their genetic material inside a pouch called a nucleus.
- Genetics
DNA in air can help ID unseen animals nearby
Analyzing these genetic residues in air offers a new way to study animals. It could give scientists a chance to monitor rare or hard to find animals.
- Genetics
Explainer: What is RNA?
A partner to DNA, cells use this molecule to translate the instructions for making all of the many proteins that your body needs to function.
