Animals
Explainer: What is animal domestication?
The difference between a dog and a wolf isn’t looks or genes or even behavior. It’s the relationship these animals have with people.
HS-LS3-2
Make and defend a claim based on evidence that inheritable genetic variations may result from: (1) new genetic combinations through meiosis, (2) viable errors occurring during replication, and/or (3) mutations caused by environmental factors.
More Stories in HS-LS3-2
- Health & Medicine
Toddler now thrives after prenatal treatment for a genetic disease
Ayla was treated before birth for the rare, life-threatening Pompe disease. Now a thriving 16-month-old toddler, her treatments will still need to continue.
- Animals
A dog’s breed doesn’t say much about its behavior
Many people associate dog breeds with specific behavioral traits. But breed appears to account for only about 9 percent of behavioral differences.
- Animals
Losing some genes may explain how vampire bats can live on blood
Loss of 13 genes active in other bats could support the vampires’ blood-eating strategies and adaptations.
- Health & Medicine
Sickle-cell gene therapies offer hope — and challenges
Doctor Erica Esrick discusses existing treatments and an ongoing clinical trial for a gene therapy to treat sickle cell disease.
- 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.
- Archaeology
Our species may have reached Europe while Neandertals were there
Archaeological finds from an ancient French rock-shelter show periodic settlements by both populations, just not at the same time.
- Animals
Cloning boosts endangered black-footed ferrets
A cloned ferret named Elizabeth Ann brings genetic diversity to a species that nearly went extinct in the 1980s.
- Animals
Will the woolly mammoth return?
Scientists are using genetic engineering and cloning to try to bring back extinct species or save endangered ones. Here’s how and why.
- Microbes
Explainer: Virus variants and strains
When viruses become more infectious or better able to survive the body’s immune system, they become a type of variant known as a strain.
