Transposon: Definition and Discovery
Chapter 1

The medical rebels who saved lives

Chapter 2

Shaking up the physical Earth and cosmos

Chapter 3

Uncovering hidden poisons in modern life

Chapter 4

The genetics and biology misfits

Ch 4 · The genetics and biology misfits
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007skaty Gregor Mendel cultivated pea plants in his monastery garden

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007skaty William Harvey mapped the circulation of blood through the human body.

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007skaty Lynn Margulis's Endosymbiotic Theory

Two different cells, working as one, powering life.

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Mendel's Mad Peas
BETA

007skaty Sort pea traits across generations to discover how Mendel's mocked ideas proved genetics correct.

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Barbara McClintock and the jumping genes

007skaty In the 1940s, Barbara McClintock analyzed maize kernels to discover jumping genes, a breakthrough dismissed as nonsense until molecular biology proved her right.

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Quiz

What is the scientific term for the 'jumping genes' discovered by Barbara McClintock?

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Quiz

What organism did Barbara McClintock study to discover the phenomenon of jumping genes?

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An established consensus is often blind to the truths that threaten it.

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William Harvey and the circulating blood

007skaty Peers ridiculed Harvey's correct circulation theory because it challenged ancient medical beliefs.

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Quiz

In what year did William Harvey publish his revolutionary book on the circulation of blood?

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Quiz

Which ancient Greek physician's theories on blood did William Harvey's work disprove?

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Fun Fact

Maize colors: Barbara McClintock could tell which genes had 'jumped' just by looking at the unique mosaic of spots and streaks on a single corn kernel.

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Quiz

In what year did Gregor Mendel publish his groundbreaking paper on plant hybridization?

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Quiz

Which of the following did Gregor Mendel discover as a fundamental law of inheritance?

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Glossary
transposon (noun)
A segment of DNA that can move to a different position within the genome of a cell. In 1951, Barbara McClintock discovered these mobile elements in maize, though colleagues initially dismissed her as crazy.

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Quiz

How many scientific journals rejected Lynn Margulis's landmark paper before it was finally published in 1967?

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Quiz

According to Lynn Margulis's endosymbiotic theory, what were mitochondria before they became cell organelles?

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Gossip

Which biological discovery do you think is the most mind-blowing?

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