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dna deoxyribonucleic acid

Matter: Clues to Africa’s Mysterious Past Found in Ancient Skeletons

Matter: Clues to Africa’s Mysterious Past Found in Ancient Skeletons

Researchers in Malawi examining bone fragments whose DNA point to enormous migrations thousands of years ago that shaped present-day populations.
Matter: Clues to Africa’s Mysterious Past Found in Ancient Skeletons

Matter: Clues to Africa’s Mysterious Past Found in Ancient Skeletons

Researchers in Malawi examining bone fragments whose DNA point to enormous migrations thousands of years ago that shaped present-day populations.
Matter: Ancient Viruses Are Buried in Your DNA

Matter: Ancient Viruses Are Buried in Your DNA

A human embryo at 45 days. Scientists have learned that a protein called Hemo, made by a fetus and the placenta, is produced from viral DNA that entered our ancestors’ genomes 100 million years ago.
Trilobites: In Easter Island DNA, Evidence of Genetic Loneliness

Trilobites: In Easter Island DNA, Evidence of Genetic Loneliness

An 18th-century engraving showing the French explorer Jean-François de Galaup La Pérouse arriving at Easter Island in 1786. A new study suggests Polynesians and South Americans did not intermingle
The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

Clarence Matthews, 110, had blood drawn at his home in Indian Wells, Calif., last year, part of a project to examine the genes of the very old. Mr. Matthews died a few months ago.
The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

Clarence Matthews, 110, had blood drawn at his home in Indian Wells, Calif., last year, part of a project to examine the genes of the very old. Mr. Matthews died a few months ago.
The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

Clarence Matthews, 110, had blood drawn at his home in Indian Wells, Calif., last year, part of a project to examine the genes of the very old. Mr. Matthews died a few months ago.
The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

The Secret to Long Life? It May Lurk in the DNA of the Oldest Among Us

Clarence Matthews, 110, had blood drawn at his home in Indian Wells, Calif., last year, part of a project to examine the genes of the very old. Mr. Matthews died a few months ago.
Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

An illustration of ancient Native Americans in what is today called the Upward Sun River site in central Alaska. The 11,500-year-old skeleton of an infant girl found there offers genetic clues to how
Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

An illustration of ancient Native Americans in what is today called the Upward Sun River site in central Alaska. The 11,500-year-old skeleton of an infant girl found there offers genetic clues to how
Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

An illustration of ancient Native Americans in what is today called the Upward Sun River site in central Alaska. The 11,500-year-old skeleton of an infant girl found there offers genetic clues to how
Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

Matter: In the Bones of a Buried Child, Signs of a Massive Human Migration to the Americas

An illustration of ancient Native Americans in what is today called the Upward Sun River site in central Alaska. The 11,500-year-old skeleton of an infant girl found there offers genetic clues to how

Trilobites: This Worm Evolved Self-Fertilization and Lost a Quarter of Its DNA

When a worm’s hermaphroditic females developed the ability to reproduce on their own, they may have shed a lot of genes related to male reproduction.
Matter: This Mutant Crayfish Clones Itself, and It’s Taking Over Europe

Matter: This Mutant Crayfish Clones Itself, and It’s Taking Over Europe

The marbled crayfish is a mutant species that clones itself, scientists report. The population is exploding in Europe, but the species appears to have originated only about 25 years ago.
Matter: This Mutant Crayfish Clones Itself, and It’s Taking Over Europe

Matter: This Mutant Crayfish Clones Itself, and It’s Taking Over Europe

The marbled crayfish is a mutant species that clones itself, scientists report. The population is exploding in Europe, but the species appears to have originated only about 25 years ago.
Matter: How One Child’s Sickle Cell Mutation Helped Protect the World From Malaria

Matter: How One Child’s Sickle Cell Mutation Helped Protect the World From Malaria

A false-color image of healthy red blood cells with some sickle cells, the defective cells that die quickly and cause sickle cell anemia. Sickle cells are the result of a mutation that scientists say