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How Do Some Cells Affect Mouse Color?

In this phenomenon-driven activity, students investigate how cells are signaled to make melanin and explain how mutations in melanin pathway proteins affect the coat color of various organisms.

Canine Conservationists

Dogs are sniffing out dwindling populations of koalas and helping scientists eliminate invasive foxes that devastate native sea turtle populations.

Salamander of the Gods

Scientists and farmers in Mexico City are working together to conserve the axolotl. Another team is partnering with salamander-breeding nuns to save a closely-related species—the achoque.

Coffee for Water

Deforestation on Mozambique’s Mount Gorongosa threatens the watershed of Gorongosa National Park. Park experts and local farmers are planting coffee to restore the forest.

Analyzing Pedigrees

In this activity, students interpret several pedigrees of autosomal dominant and recessive conditions and consider the benefits and limitations of genetic testing.