--- title: "Meaning & Key Takeaway of: DNA composition was constant in all…" description: "\"“DNA composition was constant in all tissues of a given species, but each species had its own profile.”\" — Matthew Cobb" image: "https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg" --- # DNA composition was constant in all tissues of a given… ![“DNA composition was constant in all tissues of a given species, but each species had its own profile.” quote by Matthew Cobb](https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg) [Download](https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg) [Open image](https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg) > ““DNA composition was constant in all tissues of a given species, but each species had its own profile.”” [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. DNA makeup is the same across all tissues of a species, yet each species has a distinct DNA pattern. **In simple terms:** All tissues share DNA, species differ. Key Takeaway Recognize species‑specific DNA signatures. Themes genetics species identity DNA profiling Mood analytical curious Type scientific informative When to use this quote - forensic analysis - evolutionary studies - medical diagnostics Key Concepts molecular biology comparative genomics Questions to Reflect On - How can DNA profiling aid species identification? - What limits current DNA comparison methods? A Different Perspective Species‑level variation may be subtle, requiring precise measurement. ★ ★ ★ ★ ★ No ratings yet [Evolution](https://sms4smile.com/quotes/about/evolution/) ## Related quotes > [“the transforming principle could not be made of DNA because nucleic acids were all alike. As”](https://sms4smile.com/quotes/matthew-cobb/the-transforming-principle-could-not-be-made-of-dna-because-nucleic/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [He seemed to be made of sunshine and blood-red tissue and clear weather.](https://sms4smile.com/quotes/o-henry/he-seemed-to-be-made-of-sunshine-and-blood-red-tissue-and-clear/) [O. Henry](https://sms4smile.com/quotes/author/o-henry/) > [The enzyme beta-glucoronidase is necessary to ...'trigger off'.. laetrile…after the laetrile injection, we injected directly into the tumor...beta-glucoronidase. The result was white slough which…](https://sms4smile.com/quotes/sir-arthur-harris-1st-baronet/the-enzyme-beta-glucoronidase-is-necessary-to-trigger-off-laetrile/) [Sir Arthur Harris, 1st Baronet](https://sms4smile.com/quotes/author/sir-arthur-harris-1st-baronet/) > [“Issues are like tissues. You pull one out and another appears!”](https://sms4smile.com/quotes/gary-goldstein/issues-are-like-tissues-you-pull-one-out-and-another-appears/) Gary Goldstein > [What I had mastered was fly-fishing Rule # 1: Remove all hooks from soft tissue under water, where near-freezing temperatures anesthetize exposed nerve endings…](https://sms4smile.com/quotes/jessica-maxwell/what-i-had-mastered-was-fly-fishing-rule-1-remove-all-hooks-from-soft/) [Jessica Maxwell](https://sms4smile.com/quotes/author/jessica-maxwell/) > [Making coffee has become the great compromise of the decade. It's the only thing "real" men do that doesn't seem to threaten their masculinity.…](https://sms4smile.com/quotes/erma-bombeck/making-coffee-has-become-the-great-compromise-of-the-decade-it-s-the/) [Erma Bombeck](https://sms4smile.com/quotes/author/erma-bombeck/) > [The brain is a tissue. It is a complicated, intricately woven tissue, like nothing else we know of in the universe, but it is…](https://sms4smile.com/quotes/david-h-hubel/the-brain-is-a-tissue-it-is-a-complicated-intricately-woven-tissue/) David H. Hubel > [Acting is like painting pictures on bathroom tissues. Ten minutes later you throw them away and they are gone.](https://sms4smile.com/quotes/shelley-winters/acting-is-like-painting-pictures-on-bathroom-tissues-ten-minutes/) [Shelley Winters](https://sms4smile.com/quotes/author/shelley-winters/) > [Whenever the tissue of life is woven of legalistic relationships, this creates an atmosphere of spiritual mediocrity that paralyzes a person's noblest impulses.](https://sms4smile.com/quotes/aleksandr-solzhenitsyn/whenever-the-tissue-of-life-is-woven-of-legalistic-relationships-this/) [Aleksandr Solzhenitsyn](https://sms4smile.com/quotes/author/aleksandr-solzhenitsyn/) > [It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back to hit…](https://sms4smile.com/quotes/ernest-rutherford/it-was-almost-as-incredible-as-if-you-fired-a-15-inch-shell-at-a/) [Ernest Rutherford](https://sms4smile.com/quotes/author/ernest-rutherford/) > [We should be sensitive to the thread of silence from which the tissue of speech is woven.](https://sms4smile.com/quotes/maurice-merleau-ponty/we-should-be-sensitive-to-the-thread-of-silence-from-which-the-tissue/) [Maurice Merleau-Ponty](https://sms4smile.com/quotes/author/maurice-merleau-ponty/) > [What is wrong with looking muscular? Muscles are beautiful. Strength is beautiful. Muscle tissue is beautiful. It is metabolically, medically, and philosophically beautiful. Muscles…](https://sms4smile.com/quotes/natalie-angier/what-is-wrong-with-looking-muscular-muscles-are-beautiful-strength-is/) [Natalie Angier](https://sms4smile.com/quotes/author/natalie-angier/) > [Every cell in our body is primarily water. But the water doesn't just sit in the cell, it moves through it in a very…](https://sms4smile.com/quotes/peter-agre/every-cell-in-our-body-is-primarily-water-but-the-water-doesn-t-just/) [Peter Agre](https://sms4smile.com/quotes/author/peter-agre/) > [It is something like the way dame Nature gathers round a foreign body an envelope of some insensitive tissue which can protect from evil…](https://sms4smile.com/quotes/bram-stoker/it-is-something-like-the-way-dame-nature-gathers-round-a-foreign-body/) [Bram Stoker](https://sms4smile.com/quotes/author/bram-stoker/) > [If you use Hollywood as the test tissue for mankind, what could the prognosis be?](https://sms4smile.com/quotes/pauline-kael/if-you-use-hollywood-as-the-test-tissue-for-mankind-what-could-the/) [Pauline Kael](https://sms4smile.com/quotes/author/pauline-kael/) ## More by Matthew Cobb > [“the transforming principle could not be made of DNA because nucleic acids were all alike. As”](https://sms4smile.com/quotes/matthew-cobb/the-transforming-principle-could-not-be-made-of-dna-because-nucleic/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“The genetic code is a product of biology and is messy, illogical and inelegant. It is highly redundant, but to bewilderingly varied degrees: one…](https://sms4smile.com/quotes/matthew-cobb/the-genetic-code-is-a-product-of-biology-and-is-messy-illogical-and/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“Wiener and Rosenblueth showed that purposeful, goal-directed behaviour can be seen in organisms and machines, and that it operates through what is known as…](https://sms4smile.com/quotes/matthew-cobb/wiener-and-rosenblueth-showed-that-purposeful-goal-directed-behaviour/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“As Jacob put it in 1977, natural selection does not design, it tinkers with what is available.”](https://sms4smile.com/quotes/matthew-cobb/as-jacob-put-it-in-1977-natural-selection-does-not-design-it-tinkers/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“Genes were no longer mysterious embodiments of specificity, they were information – a code – that could be transmitted (another word from the electronic…](https://sms4smile.com/quotes/matthew-cobb/genes-were-no-longer-mysterious-embodiments-of-specificity-they-were/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“In fact they are historical, carrying the baggage of their evolutionary past, and have not been designed at all. They are often far from…](https://sms4smile.com/quotes/matthew-cobb/in-fact-they-are-historical-carrying-the-baggage-of-their/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“In the discussion, Gulland was asked about the possibility that a DNA molecule might be a helix, held together by the presence of evenly…](https://sms4smile.com/quotes/matthew-cobb/in-the-discussion-gulland-was-asked-about-the-possibility-that-a-dna/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“By the end of the 1940s, support for the hypothesis that DNA had a fundamental role in heredity had grown much stronger.”](https://sms4smile.com/quotes/matthew-cobb/by-the-end-of-the-1940s-support-for-the-hypothesis-that-dna-had-a/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“In typically generous fashion, Crick was offering Nirenberg the opportunity to step into history as the man who had cracked the genetic code.”](https://sms4smile.com/quotes/matthew-cobb/in-typically-generous-fashion-crick-was-offering-nirenberg-the/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“Every result converged on the same conclusion: the transforming principle was composed of DNA. The discussion section of the article outlined the genetic context…](https://sms4smile.com/quotes/matthew-cobb/every-result-converged-on-the-same-conclusion-the-transforming/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“Avery had described one of the most momentous discoveries in the history of science, and no one could think of anything to say.”](https://sms4smile.com/quotes/matthew-cobb/avery-had-described-one-of-the-most-momentous-discoveries-in-the/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“By the end of the 1940s, it was widely known that the levels of protein in the transforming principle were effectively zero.”](https://sms4smile.com/quotes/matthew-cobb/by-the-end-of-the-1940s-it-was-widely-known-that-the-levels-of/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“If the adaptor hypothesis were true (and it was), this meant that the role of DNA and RNA would be reduced to simply carrying…](https://sms4smile.com/quotes/matthew-cobb/if-the-adaptor-hypothesis-were-true-and-it-was-this-meant-that-the/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) > [“Part of the problem was that no one knew exactly how a cell took a nucleic acid sequence and turned it into a blob…](https://sms4smile.com/quotes/matthew-cobb/part-of-the-problem-was-that-no-one-knew-exactly-how-a-cell-took-a/) [Matthew Cobb](https://sms4smile.com/quotes/author/matthew-cobb/) [Explore all 15 Matthew Cobb quotes ](https://sms4smile.com/quotes/author/matthew-cobb/) ## More Evolution quotes > [I rap when I'm rich. I rap when I'm broke. I rap when I'm bullshit in the street. I rap about only having one…](https://sms4smile.com/quotes/killer-mike/i-rap-when-i-m-rich-i-rap-when-i-m-broke-i-rap-when-i-m-bullshit-in/) [Killer Mike](https://sms4smile.com/quotes/author/killer-mike/) > [At the deepest level, all living things that have ever been looked at have the same DNA code. And many of the same genes.](https://sms4smile.com/quotes/richard-dawkins/at-the-deepest-level-all-living-things-that-have-ever-been-looked-at/) [Richard Dawkins](https://sms4smile.com/quotes/author/richard-dawkins/) > [“A question for Christians who accept evolution: When did we gain a "soul"? Did Homo habilis have a soul? Homo ergaster? Did God only…](https://sms4smile.com/quotes/david-g-mcafee/a-question-for-christians-who-accept-evolution-when-did-we-gain-a/) [David G. McAfee](https://sms4smile.com/quotes/author/david-g-mcafee/) > [If the polymer chain assumes a helicoidal conformation in the crystalline state, and if it does not contain asymmetric carbon atoms, it can be…](https://sms4smile.com/quotes/giulio-natta/if-the-polymer-chain-assumes-a-helicoidal-conformation-in-the/) Giulio Natta > [“Genetics is a science full of gods, Mr. Sanchez.”](https://sms4smile.com/quotes/valeria-luiselli/genetics-is-a-science-full-of-gods-mr-sanchez/) [Valeria Luiselli](https://sms4smile.com/quotes/author/valeria-luiselli/) > [We became Homo sapiens not that long ago, from the scientific perspective, and we've retained a lot of our beast nature. We've done all…](https://sms4smile.com/quotes/wangechi-mutu/we-became-homo-sapiens-not-that-long-ago-from-the-scientific/) [Wangechi Mutu](https://sms4smile.com/quotes/author/wangechi-mutu/) > [Guns have little or nothing to do with juvenile violence. The causes of youth violence are working parents who put their kids into daycare,…](https://sms4smile.com/quotes/tom-delay/guns-have-little-or-nothing-to-do-with-juvenile-violence-the-causes/) [Tom DeLay](https://sms4smile.com/quotes/author/tom-delay/) > [The fact -- not theory -- that evolution has occurred and the Darwinian theory as to how it occurred have become so confused in…](https://sms4smile.com/quotes/george-gaylord-simpson/the-fact-not-theory-that-evolution-has-occurred-and-the-darwinian/) [George Gaylord Simpson](https://sms4smile.com/quotes/author/george-gaylord-simpson/) > [Perhaps no order of mammals presents us with so extraordinary a series of gradations as this \[step by step, from humans to apes to…](https://sms4smile.com/quotes/thomas-huxley/perhaps-no-order-of-mammals-presents-us-with-so-extraordinary-a/) [Thomas Huxley](https://sms4smile.com/quotes/author/thomas-huxley/) > [Evolution happens in jumps, very rapidly.](https://sms4smile.com/quotes/marilyn-ferguson/evolution-happens-in-jumps-very-rapidly/) [Marilyn Ferguson](https://sms4smile.com/quotes/author/marilyn-ferguson/) > [The true nature of soul is right knowledge, right faith and right conduct. The soul, so long as it is subject to transmigration, is…](https://sms4smile.com/quotes/virchand-gandhi/the-true-nature-of-soul-is-right-knowledge-right-faith-and-right/) [Virchand Gandhi](https://sms4smile.com/quotes/author/virchand-gandhi/) > [“Toshiaki learned that all living organisms were governed by their DNA. He was impressed by perfection of this system.Why did existence have the ability…](https://sms4smile.com/quotes/hideaki-sena/toshiaki-learned-that-all-living-organisms-were-governed-by-their-dna/) Hideaki Sena > [The shelves of many evangelicals are full of books that point out the flaws in evolution, discuss it only as a theory, and almost…](https://sms4smile.com/quotes/francis-collins/the-shelves-of-many-evangelicals-are-full-of-books-that-point-out-the/) [Francis Collins](https://sms4smile.com/quotes/author/francis-collins/) > [I'm all about evolution. I'm the first person to judge myself.](https://sms4smile.com/quotes/the-weeknd/i-m-all-about-evolution-i-m-the-first-person-to-judge-myself/) [The Weeknd](https://sms4smile.com/quotes/author/the-weeknd/) > [The next evolution of content marketing is not more content; it's better distribution.](https://sms4smile.com/quotes/chris-penn/the-next-evolution-of-content-marketing-is-not-more-content-it-s/) [Chris Penn](https://sms4smile.com/quotes/author/chris-penn/) [Browse all 6,185 Evolution quotes ](https://sms4smile.com/quotes/about/evolution/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Quotation", "text": "“DNA composition was constant in all tissues of a given species, but each species had its own profile.”", "creator": { "@type": "Person", "name": "Matthew Cobb" }, "isPartOf": { "@id": "https://sms4smile.com/quotes/#website" }, "url": "https://sms4smile.com/quotes/matthew-cobb/dna-composition-was-constant-in-all-tissues-of-a-given-species-but/", "about": { "@type": "Thing", "name": "Evolution" }, "@id": "https://sms4smile.com/quotes/matthew-cobb/dna-composition-was-constant-in-all-tissues-of-a-given-species-but/#quotation", "image": { "@type": "ImageObject", "@id": "https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg", "contentUrl": "https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg", "url": "https://sms4smile.com/quotes/i/ef8/matthew-cobb-32875_evolution_dna-composition-was-constant-in-all-tiss_632188.jpg", "width": 1080, "height": 1080, "caption": "“DNA composition was constant in all tissues of a given species, but each species had its own profile.” — Matthew Cobb", "creditText": "SMS4Smile Quotes", "creator": { "@id": "https://sms4smile.com/quotes/#organization" } } }, { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://sms4smile.com/" }, { "@type": "ListItem", "position": 2, "name": "Quotes", "item": "https://sms4smile.com/quotes/" }, { "@type": "ListItem", "position": 3, "name": "Matthew Cobb", "item": "https://sms4smile.com/quotes/author/matthew-cobb/" }, { "@type": "ListItem", "position": 4, "name": "“DNA composition was constant in all...", "item": "https://sms4smile.com/quotes/matthew-cobb/dna-composition-was-constant-in-all-tissues-of-a-given-species-but/" } ], "@id": "https://sms4smile.com/quotes/matthew-cobb/dna-composition-was-constant-in-all-tissues-of-a-given-species-but/#breadcrumb" }, { "@type": "WebSite", "@id": "https://sms4smile.com/quotes/#website", "name": "SMS4Smile Quotes", "url": "https://sms4smile.com/quotes/", "publisher": { "@id": "https://sms4smile.com/quotes/#organization" } }, { "@type": "Organization", "@id": "https://sms4smile.com/quotes/#organization", "name": "SMS4Smile Quotes", "url": "https://sms4smile.com/quotes/", "logo": { "@type": "ImageObject", "url": "https://sms4smile.com/quotes/wp-content/themes/sq/assets/icons/icon-512.png", "width": 512, "height": 512 } } ] } ```