The question this episode answers
How can a molecule built from only four chemical letters store enough usable instructions to build and run a living organism?
A beginner-friendly look at how DNA stores instructions that help build and run living things.
Researched & cited
Every claim is researched from multiple sources and cross-checked before narration. Daycast is made with AI — researched, written, and narrated — and we say so in every episode. Sources below.
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- DNA as the Instruction Book.How does DNA work as the instructions for human traits? The cells of our
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- Pathophysiological insights in sickle cell disease - PMC
- DNA Sequencing Fact Sheet
- Gene Expression
- A specific chemical difference between the globins of normal human and sickle-cell anaemia haemoglobin - PubMed
- Polymerization in erythrocytes containing S and non-S hemoglobins - PMC
- Hemoglobin S Polymerization: Primary Determinant of the Hemolytic and Clinical Severity of the Sickling Syndromes - ScienceDirect
- The Structure and Function of DNA - Molecular Biology of the Cell - NCBI Bookshelf
- Deoxyribonucleic Acid (DNA) Fact Sheet
- The Universal Features of Cells on Earth - Molecular Biology of the Cell - NCBI Bookshelf
- Heredity, Genes, and DNA - The Cell - NCBI Bookshelf
- DNA Repair - Molecular Biology of the Cell - NCBI Bookshelf
- Deoxyribonucleic Acid (DNA)
- Expression of Genetic Information - The Cell - NCBI Bookshelf
- Gene
- Talking Glossary of Genetic Terms | NHGRI
- Genome
- Non-Coding DNA
- A Brief Guide to Genomics
- Central Dogma
- Ribonucleic Acid (RNA) Fact Sheet
- Transcription and Translation Lesson Plan
- An Overview of Gene Control - Molecular Biology of the Cell - NCBI Bookshelf
- Translation
- The Molecular Composition of Cells - The Cell - NCBI Bookshelf
- Protein Function - Molecular Biology of the Cell - NCBI Bookshelf
- Scientists create a new \"roadmap\" for the human epigenome
- A DNA methylation atlas of normal human cell types | Nature
- Data Processing Pipelines – ENCODE
- Histone modifications at human enhancers reflect global cell-type-specific gene expression | Nature
- 14 The Epigenome
- The selection and function of cell type-specific enhancers | Nature Reviews Molecular Cell Biology
- Enhancer selectivity in space and time: from enhancer–promoter interactions to promoter activation | Nature Reviews Molecular Cell Biology
- Cold Spring Harbor Laboratory Press
- Control of cell identity genes occurs in insulated neighborhoods in mammalian chromosomes - PMC
- Chromatin Dynamics
- Epigenomics Fact Sheet
- Open chromatin defined by DNaseI and FAIRE identifies regulatory elements that shape cell-type identity - PMC
- Identifying transcription factors with cell-type specific DNA binding signatures - PMC
- Hormone-dependent control of developmental timing through regulation of chromatin accessibility - PMC
- Biology of Chromatin
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- ENCODE Encyclopedia
- A comparative atlas of single-cell chromatin accessibility in the human brain - PMC
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- DNA Replication
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- DNA Replication - The Cell - NCBI Bookshelf
- Errors in DNA Replication | Learn Science at Scitable
- Polymerization and editing modes of a high-fidelity DNA polymerase are linked by a well-defined path | Nature Communications
- The multifaceted mismatch-repair system | Nature Reviews Molecular Cell Biology
- Molecular mechanisms and genomic maps of DNA excision repair in Escherichia coli and humans - PMC
- Xeroderma Pigmentosum - GeneReviews® - NCBI Bookshelf
- DNA repair defects in cancer and therapeutic opportunities - PMC
- Xeroderma pigmentosum: MedlinePlus Genetics
- A panoply of errors: polymerase proofreading domain mutations in cancer | Nature Reviews Cancer
- Genome instability: a mechanistic view of its causes and consequences | Nature Reviews Genetics
- Translesion and repair DNA polymerases: diverse structure and mechanism - PMC
- Metastasis
- Mutation
- Genomic Variation
- What is a gene variant and how do variants occur?: MedlinePlus Genetics
- Gene Environment Interaction
- Sickle Cell Disease - GeneReviews® - NCBI Bookshelf
- Transcription
- Evidence-Based
- What You Should Know About Sickle Cell Trait
- Sickle Cell Genetics and Pathophysiology | NHLBI, NIH
- Polygenic Trait
- Is height determined by genetics?: MedlinePlus Genetics
- Genetic Architecture
- Phenotype
- Gene Regulation
- Epigenetics and the environment: emerging patterns and implications | Nature Reviews Genetics
- The context of gene expression regulation - PMC
- Context transcription factors establish cooperative environments and mediate enhancer communication - PMC
- Sequence determinants of human gene regulatory elements - PMC
- Identification and characterization of DNA sequences that prevent glucocorticoid receptor binding to nearby response elements - PMC
- Time-integrated BMP signaling determines fate in a stem cell model for early human development | Nature Communications
- Does the Semiconservative Nature of DNA Replication Facilitate Coherent Phenotypic Diversity? - PMC
- Accurate Recycling of Parental Histones Reproduces the Histone Modification Landscape during DNA Replication - PMC
- Memory of Divisional History Directs the Continuous Process of Primitive Hematopoietic Lineage Commitment - PMC
- Interferon stimulation creates chromatin marks and establishes transcriptional memory - PMC
- Kinetics and mechanisms of mitotic inheritance of DNA methylation and their roles in aging-associated methylome deterioration - PMC
- ARTICLE IN PRESS
- Backup in gene regulatory networks explains differences between binding and knockout results - PMC
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