Genetic engineering

Key people

• David BaltimoreAmerican biologist and Nobel laureate (1938–2025)
• Ian WilmutBritish embryologist (1944–2023)
• Jiankui HeChinese biophysicist (1984-)
• Feng ZhangChinese-American synthetic biologist

Timeline

• 1970Genetic engineering, as the direct manipulation of DNA by humans outside breeding and mutations, has only existed since the 1970s.
• 1994Genetically modified food has been sold since 1994, with the release of the Flavr Savr tomato.

Read

• Genetic engineeringJane K. Setlow · 1982Book
• Introduction to Genetic EngineeringDesmond S. T. Nicholl · 2002Book
• Principles of gene manipulationR. W. Old · 1979Book
• DNA and Genetic EngineeringRobert Snedden · 2002Book

Listen

• The After On PodcastRob ReidPodcast
• Femlore Podcast (formally Feminist Folklore)Femlore PodcastPodcast
• Touching BaseGenetic Engineering & Biotechnology News (GEN)Podcast
• GEN PodcastsGenetic Engineering & Biotechnology News (GEN)Podcast

Voices to follow

• Christopher E. Mason@mason_lab · XAmerican geneticist
• Marie Paule Kieny@mpkieny · XFrench virologist and science writer
• Jiankui He@Jiankui_He · XChinese biophysicist (1984-)

By the numbers

• 73.5Global life expectancy (yrs) — global, 2024 (World Bank)
• 10.1Health spend (% GDP) — global, 2023 (World Bank)

Debates

• Should gene editing be used for human enhancement?One view: Yes, it could improve human traits like intelligence or physical ability, benefiting individuals and society. · Another: No, it raises ethical concerns about creating a 'designer baby' class and potential unforeseen health risks.Open question
• Is it ethical to modify germline cells (sperm, egg, embryo) for therapeutic purposes?One view: Yes, editing germline cells could eliminate inherited diseases for future generations, preventing suffering. · Another: No, changes to germline cells are permanent and heritable, posing unknown risks to the human gene pool.Open question
• Should genetically modified organisms (GMOs) be widely used in agriculture?One view: Yes, GMOs can increase crop yields, enhance nutritional value, and reduce pesticide use, addressing food security. · Another: No, concerns exist about potential ecological impacts, effects on biodiversity, and long-term human health risks.Open question

Glossary

• GeneA segment of DNA that contains instructions for building a specific protein or function.
• DNADeoxyribonucleic acid, the molecule carrying genetic instructions in all living things.
• CRISPRA revolutionary gene-editing tool that allows precise modification of DNA sequences.
• Genetic engineeringThe direct manipulation of an organism's genes using biotechnology.
• GenomeThe complete set of genetic material present in an organism.
• Gene therapyA technique that involves inserting a gene into a patient's cells to treat a disease.

Careers

Roles this can lead toward

Student research

Published policy papers by One Young India delegates — every delegate leaves published under their own name.

• Beyond the Genome: Dynamic Epigenetics and the Future of Precision MedicineShaan Soni
• Prompt Engineering as a Cognitive Tool in Today’s WorldViraj Patra
• The Role of Mental Health in Shaping Young Adults’ Positive Attitude and Emotions for Holistic Development: The India ScenarioAmartya Krishnaditya
• Universal Healthcare- Best Practices around the World and in IndiaSyed Fazil Shariq SA

Threads 10

Where this connects to other fields — and why it's worth knowing.

• Private Law: Contract, Tort & Property Law

  There's an old legal rule: you can't own a fact of nature, like gravity or a river. Then companies started patenting genes, chunks of DNA that already sit inside every one of us. Suddenly courts had to ask a weird question: can someone own a piece of code that's literally in your own body?

• Digital Authoritarianism Politics

  Normally a gene has a 50/50 shot of passing to offspring, but a 'gene drive' rigs the dice so a chosen trait sweeps through an entire wild species, forever. That's the power to rewrite nature that we all share, single-handedly, with no treaty controlling it. It sits a lot closer to a weapon than a medicine, because whoever wields it changes the world for everyone.

• Immunology Health

  CRISPR, the tool scientists use to edit DNA, wasn't invented by humans at all. Bacteria evolved it as an immune system, a molecular memory that recognizes returning viruses and slices them apart. We just noticed this ancient bacterial defense and hijacked its genetic scissors to rewrite the code of life, including our own.

• Software Engineering Technology

  When an app update breaks, coders just roll back to the old version. A 'gene drive' released into wild animals is like an update with no undo button. Once it starts copying itself through a whole forest of creatures, there's no going back.

• Business Models Business

  Drug companies make steady money from patients who buy medicine every month, forever. A one-time gene therapy that actually cures you breaks that whole model. Fix someone permanently and the monthly payments, and the profit, just stop.

• Religion and Morality Religion

  CRISPR lets doctors rewrite the DNA of an embryo like editing text. But many faiths see the body as a gift you're not supposed to redraft. So a medical fix can feel, to a believer, like scribbling over something sacred.

• Intellectual Property and Copyright Law

  If a scientist edits a gene, is that gene now an invention they can own, or just a discovery nobody can? CRISPR drags courts into that fight. Suddenly, ownership law is arguing over the code of life itself.

• Biodiversity Loss Environment

  A 'gene drive' can spread a change through a whole species until that species dies out. People want to use it to wipe out malaria mosquitoes and stop the disease. But it's extinction on purpose, with no undo button if we get it wrong.

• The Caste System Sociology

  Imagine gene upgrades for smarts or strength that only rich families can afford. Then their advantage stops being just money passed down and becomes actual biology passed down. That's a caste system written straight into people's DNA.

• Probability, Risk & Uncertainty Mathematics

  Insurance works because nobody knows exactly who'll get sick, so everyone chips in and shares the risk. But once companies can read your DNA, they can price you by your personal odds. That knowledge quietly breaks the shared gamble that makes insurance possible.