ploidy

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Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

airplane in flight (plane, aircraft, flying)

7 Puzzling Plane Disappearances

World map. Continents. Oceans. Mendel thumb ok

Just How Many Oceans Are There?

A mug shot taken by the regional Colombia control agency in Medellin

Pablo Escobar: 8 Interesting Facts About the King of Cocaine

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

Franklin D. Roosevelt, who formulated the Four Freedoms.

7 Alphabet Soup Agencies that Stuck Around

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Topics

haploidy polyploidy aneuploidy diploidy triploidy hexaploidy autopolyploidy allopolyploidy tetraploidy chromosome gene sex chromosome major histocompatibility complex telomere chromosome number centromere autosome karyotype chromatid