Physics
Creation in Pairs
Scientific Context
The Universal Architecture of Pairs
One of the most pervasive patterns in the natural world is the existence of complementary pairs. Across virtually every kingdom of life, reproduction involves the union of two complementary types. The chromosomal basis of sex determination was worked out in the twentieth century: an embryo’s sex is set by the combination of sex chromosomes it inherits, XX or XY in mammals, with analogous systems in birds, insects, and plants. The pairing is not just anatomical. It is encoded in the molecules of inheritance.
DNA itself is a paired structure. Each molecule consists of two complementary strands wound around each other, with the four nucleotide bases pairing according to strict rules: adenine with thymine, guanine with cytosine. Watson and Crick, working with Rosalind Franklin’s X-ray diffraction data, identified this double-helix structure in 1953. The pairing is not incidental to how DNA works, it is the mechanism by which genetic information is copied and transmitted. Each strand serves as a template for the other, and the integrity of the pairing is what allows heredity to operate from one generation to the next.
At the subatomic level, pairing is not merely common but fundamental. In particle physics, energy converts into matter through pair production, always creating a particle together with its antiparticle. The British physicist Paul Dirac predicted antimatter in 1928 on the theoretical grounds that every particle should have a counterpart. The prediction was confirmed in 1932 when Carl Anderson, working at Caltech, identified the positron in cosmic-ray tracks. By the end of the twentieth century, an antiparticle had been identified for every charged particle in the standard model. Matter and antimatter, positive and negative charge, spin-up and spin-down: the pairing extends through the entire architecture of fundamental physics.
Two complementary forms, each defined partly by what the other is not, come together to make a system that neither could make alone. Across biological reproduction, molecular structure, and the subatomic world, the pattern is the same. Dirac’s 1928 insight, that the equations of quantum mechanics required every particle to have a counterpart, is now confirmed across the standard model. The pairing the verse names is a feature of the universe at every scale where the question can be asked.
Islamic Context
سُبْحَانَ الَّذِي خَلَقَ الْأَزْوَاجَ كُلَّهَا مِمَّا تُنبِتُ الْأَرْضُ وَمِنْ أَنفُسِهِمْ وَمِمَّا لَا يَعْلَمُونَ
Exalted is He who created all pairs — from what the earth grows and from themselves and from that which they do not know.
— Quran 36:36
Surah Ya-Sin begins, Subḥāna alladhī khalaqa al-azwāja kullahā — "Exalted is He who created all things in pairs." The verb khalaqa (created) names the act; the noun azwāj (pairs) names what was created. The construction is absolute: kullahā, all of them, with no domain excluded. Al-Tabari (d. 923), in his commentary, observed that the choice of kull is the load-bearing word. The pairing the verse names is not illustrated by a list of examples; it is asserted as a feature of everything created, with the examples following as illustrations.
The verse then specifies three domains. The first is mimmā tunbitu al-arḑ, from what the earth grows, the pairing in plants. The second is wa-min anfusihim, from themselves, the male-female pairing in human beings and animals. Both of these are within the scope of what any pre-modern hearer could recognise. The third is what makes the verse distinctive. Wa-mimmā lā yaʿlamūn, and from that which they do not know. The verse is naming a category of pairing the hearer could not have identified, and the category is left open.
Classical commentators understood the structure of the verse as a progression. The two named domains were the visible part of the claim; the third was the open part. Al-Qurtubi (d. 1273) noted that the pairing the verse names is being asserted, in the strongest possible terms, as a universal principle whose full scope is left for later discovery to fill in. Mujahid, one of the earliest commentators, made a sharper observation: the third clause is not a closing flourish. It is the verse’s most distinctive claim, a deliberate opening of the principle into a domain the first hearer could not specify.
The same principle is reinforced in another passage. In 51:49, the verse reads wa-min kulli shayʾin khalaqnā zawjayn, and of all things We created two mates. The word zawjayn (two mates) names the pairing without limiting it to any specific domain, and the universal kull is repeated. Al-Razi observed that the pairing in creation points to a structural feature of how the world is made, and that the verse is naming the feature as a category, not a list. The pairing is not just that some things come in twos. It is that twoness itself, the existence of two complementary forms, is built into the structure of what is created.
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The Connection
The Qur’an posits pairing as a universal law, asserting that even realms beyond the reach of human perception are structured through complementary forms. This is no longer a theological speculation; it is the observable backbone of physics. From the molecular template of DNA to the creation of matter and its antiparticle, nature requires duality to function.
