From First Principles4 Joulu 2025

The Race to the Double Helix — Watson, Crick, Franklin & the Real Story of DNA (EP. 19)

Hosted by Lester Nare and Krishna Choudhary, this single-story deep dive tells the full story of how humanity uncovered the structure of DNA — and the human tensions that shaped it. From Mendel’s pea-plant mathematics to Rosalind Franklin’s groundbreaking x-ray crystallography, from Cavendish–King’s College rivalries to the famous Photo 51, this episode follows the scientific and ethical arc behind one of the most important discoveries in modern biology.

Summary

Before DNA — Mendel’s inheritance laws, Miescher’s nuclein, Levene’s early models, and why scientists initially believed proteins carried heredity.
The turning point — Griffith’s transformation experiment and the Avery–MacLeod–McCarty proof that DNA is the genetic material.
The physics connection — Schrödinger’s What Is Life? and the idea of an “aperiodic crystal” inspiring Watson, Crick, and a generation of physicists to enter biology.
Two labs, one race — Cavendish vs. King’s College, Wilkins vs. Franklin, and the clash of personalities, methods, and interpretations.
Photo 51 — Franklin and Gosling’s pivotal diffraction image revealing the helical structure of DNA.
The model — base pairing, antiparallel strands, and why the double helix immediately explained replication.
Recognition & legacy — the 1953 Nature papers, the 1962 Nobel Prize, Franklin’s omission, and Watson’s later controversies reshaping his legacy.

Show Notes

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Jaksot(63)

Nobel Prize in Chemistry 2026 Explained: Mirror Molecules (EP 63)

Why does life favor one molecular mirror image? The 2026 Nobel Prize in Chemistry honors Henri B. Kagan and Kenso Soai for nonlinear effects and autocatalysis in asymmetric organic synthesis.Lester Na...

7 Loka 1h 20min

Nobel Prize in Physics 2026 Explained: IceCube & Neutrinos (EP 62)

Why build a telescope inside a billion tons of Antarctic ice? The 2026 Nobel Prize in Physics recognizes Francis Halzen's work on IceCube and the discovery of high-energy neutrinos from the cosmos.In ...

6 Loka 1h 2min

Nobel Prize in Medicine 2026 Explained: Optogenetics (EP 61)

How do you prove what a brain cell actually does? The 2026 Nobel Prize in Medicine celebrates a remarkable answer: give cells a light-sensitive protein, then switch their activity on or off with light...

5 Loka 1h 11min

2026 Nobel Prize Predictions: Medicine, Physics & Chemistry (EP 60)

Who could win the 2026 Nobel Prizes? From the science behind Ozempic to quantum interference and droplets inside living cells, Lester Nare and Krishna Choudhary make their picks for Medicine, Physics ...

3 Loka 40min

Golden Goose Awards 2026: The Science Behind the Winners (Part 1) (EP 59)

What connects a noise complaint, holiday lights seen from space, and the physics of a coffee stain? Three unexpected paths from basic research to discoveries with real-world impact.Krishna Choudhary a...

29 Syys 2h 7min

What OpenAI Actually Did to Navier-Stokes (EP 58)

What does it mean to solve an equation that describes almost every fluid around us, from the air over a wing to the water swirling down a drain?In Episode 58 of From First Principles, Lester Nare and ...

24 Syys 4h 9min

What’s Next in Science? Nobel Prizes, Space Missions & More (EP 57)

What science should you be watching this fall? From Nobel Prize season to NASA’s Roman Space Telescope, Mars’ moons and Mercury, Lester Nare and Krishna Choudhary take a relaxed tour of the discoverie...

14 Syys 1h 3min

The Yak Mutation That Could Help Repair the Brain (EP 56)

What can a yak living thousands of meters above sea level teach us about repairing the human brain?In Episode 56 of From First Principles, Lester Nare and Krishna Choudhary break down a new Neuron pap...

7 Syys 1h 35min