“And of everything We have created pairs, that you may remember (the Grace of Allâh)”

The Arabic word “azvaj” is the plural of “zavj” meaning “pairs,” “matches,” “partners.” There are three sorts of pairs.The above Qur’anic verses mention the fact that all creatures, whether living beings or solid matter, are created in pairs. This means that this phenomenon does not only apply to animals and plants. The verses do not refer exclusively to pairs of sexes or to sexual reproduction alone; rather, it is much more general. It refers to everything that was created.
Dr. Zaghloul Ragheb Mohamed El-Naggar Professor of Geology, Head, Committee on Scientific Nations in the Glorious Qur'an & Purity Sunnah Supreme Council for Islamic Affairs, Cairo, Egypt carried out his research on pairing of various creation are as follows:This parity in creation, which attests to the Oneness of the Creator, demonstrates itself in the following stages:

1.Parity In all living organisms: humans, animals and plants;
2.Parity In reproductive cells (gametes): (ovum) and sperm;
3Parity In the male sperm that contains either a male or female sex chromosome;
4.Parity In chromosomes that are present inside the nucleus of a living cell;
5.Parity In genes that carry heredity information and which are located on every chromosome from these ones.
6.Parity In nucleic acid structure;
7.How the four nitrogenous bases that build the (" steps") of the DNA connect together in a parity.
8.Parity In how the deoxyribose molecule (organic) is linked with the phosphate molecule (non-organic) to form the ( “sides”) of a DNA molecule;
9.Parity in the building of amino acids in both its forms: right-handed isomers and left-handed isomers;
10.Parity In proteins and anti –proteins.
11.Parity In the molecule by its two parts positive (cations) and negative (anions);
12.Parity In the atom and its nucleus which has a positive charge and it's electrons which have a negative charge;
13.Parity In particles and antiparticles – it means in existence and nonexistence
14.Parity In the primary units of the matter and its opposing elements;-it means in existence and non- existence.
15.Parity In matter and antimatter it means in existence and non- existence.
16.Parity In positive and negative energy charges;
17.Parity In matter and energy, which are two sides of the same coin and two forms of the same essence that signifies the Oneness of the Great Creator. To fully explain the above pattern of parity, each point would need to be dealt with in a separate article. Therefore, I will only choose a few examples of them in the following analysis:

I. Parity in living organisms:

Humans and animals reproduce by mating of a male and a female, which is known as sexual reproduction. In most cases, the male and female exist separately from one another (i.e. in separate individuals). However, in some simple animals, the male and female reproductive cells are found in the same individual, which give the male type of cell to another individual. In sexual reproduction, fertilization can occur either inside the body or outside it. In simpler animal organisms reproduction occurs through binary division, budding, fragmentation, and creation of colonies or through virgin reproduction (without fertilization). This is all known as asexual reproduction. A single animal can sometimes alternate between sexual and asexual reproduction during its life cycle.
Through our knowledge of parity in elements and particles we can maintain with high certainty that some form of pair pattern takes place in asexual reproduction. In plants, parity clearly appears in plants that produce flowers, which constitute more than a quarter of a million species. The flowers of these plants, which are produced through the blossoming of their buds, carry the reproductive organs made of male & female cells. These organs could be present in one flower, in two different flowers in the same plant or there could be male and female kinds of the same plant.
Fertilization in flowering plants leads to the production of seeds. Every seed contain the zygote of the new plant and an amount of stored food reserve for it given by the greatest creator (SWT). The seeds are usually contained in the fruit or are the fruit itself.
Non-flowering plants, however, reproduce by both sexually and asexually pattern through two phases of one life-cycle known as the alternation of generations. In its first phase, the plant produces both male and female gametes. The male gamete separates and is transferred through watery media to reach a female gamete to pollinate and fertilize it by uniting with it. In the second phase, the plant produces reproductive cells called haploid gametes which dispersed from the plant that is carrying after maturity, and grow in a suitable environment into a new plant. II. Parity in male & female reproductive cells (sperms and ova):

Allah, the Creator (SWT) endowed the body of a sexually mature male the ability to produce male gametes known as sperms. Likewise, He endowed the body of a sexually mature female the ability to produce female gametes known as (ovum). When a pair of these gametes unites, it produces a zygote (nutfa amshaj). By the will of Allah, when the zygote is implanted in the wall of the uterus it undergoes cell division and the new baby comes into formation.

III. Parity inside the male gamete (sperm) itself:

Every sperm contains one of two sex chromosomes, either an X sex chromosome that represents the female or a Y sex chromosome that represents the male. An ovum can contain only an X sex chromosome. If the sperm that fertilizes the ovum contains a Y sex chromosome then, by Allah’s Will, the baby will be a boy, having a pair (XY) of sex chromosomes. However, if the fertilizing sperm contains an X sex chromosome then, by Allah’s Will, the baby will be a girl, having a pair (XX) of sex chromosomes. Therefore, parity is clearly also present inside the male gamete itself, besides the fact that there are male and female gametes.

IV. Parity in the chromosomes themselves:

Chromosomes are found inside the living cell nucleus in the form of string-like structures that are intertwined and packed in a substance called chromatin. These create the granular or net-like appearance of the nucleus. Chromosomes are primarily composed of deoxyribonucleic acid (DNA), which carries the genetic code of the cell, as well as being composed of proteins in roughly proportionate amounts. Each chromosome (whose number is one of the factors determining its type) is composed of two strings that are held together at a point called the centromere, which is a small point that has a determined location on every chromosome. Its location is sometimes close to the middle of the two strings and in most cases close to one of their two edges. This is one of the incredible representations of Parity in creation.

V. Parity in genes (which carry hereditary information):

Genes are distributed along each chromosomal strand in the form of individual segments of DNA. They are found in clear pairs, because one allele (one member of a pair of genes) comes to the embryo from the father and the other allele comes from the mother.

VI, VII, VIII. Parity in the structure of DNA and in the structure of its steps and sides:

Each DNA molecule is structured in the form that is known as the double helix, which can be structurally described as a twisted ladder. The “sides” of this ladder which are composed of deoxyribose sugar and phosphate groups demonstrate parity (in how the sugars and phosphate groups are alternately linked). Furthermore, the “steps” of the ladder, which are each composed of two out of four nitrogenous bases, demonstrate parity in how they pair with each other. The four nitrogenous bases that make up the steps are: adenine (A), thymine (T), guanine (G) and cytosine (C).The first two bases always pair with one another and the latter two always pair with one another. Each of the bases lines up perfectly with its pair but not with any other base. Each pair of nitrogenous bases is attached to a pair made up of a sugar and a phosphate group composing deoxyribonucleotides, which are the units making up DNA. This proves how everything from the smallest to the largest unit is created in pairs.

IX, X. Parity in the structures of amino acids and proteins:

Amino acids are the building blocks of the various protein molecules, which make up the bodies of living organisms. Amino acids in most cases dissolve in water. In its crystallized form, an amino acid is very optically active due to its molecule being composed of a central carbon atom (C) bonded to four different groups: amino group (NH2), carboxyl group (COOH), one of 20 different (R) groups, and a hydrogen atom (H). Therefore, the amino acid molecule is asymmetrical and these four groups rotate around the carbon atom. This means that the amino group can be found at different positions with regards to the carboxyl group. Due to the resulting asymmetry of the amino acid molecule, amino acids exist in either of two forms: either ones that rotate plane polarized light to the right (known as a right-handed isomer), or those that rotate plane polarized light to the left (known as a left-handed isomer). [Isomers are compounds having the same molecular formula but different arrangements of atoms in the molecule]. It has been proven that amino acids in the bodies of all living organisms (plants, animals and humans) are all left-handed isomers.
When the organism dies, the amino acids in its remnants start to re-arrange the atoms inside their molecules from being left-handed to being right handed, in fixed rates, until both left and right-handed molecules are present in equal amounts. Such a mixture of a pair of optical isomers with the same number of molecules is known as a racemic mixture. A racemic mixture cannot rotate plane polarized light [as both right and left-handed rotations cancel each other out], however it represents parity in its narrowest form.
The proportion of right-handed to left-handed forms in one amino acid in the remnants of a plant, animal or human can be used to determine the exact moment of death, with very high accuracy.
There are 20 known types of protein building amino acids, each of which is in a clear pair. Through bonding of the 20 types of amino acids, more than a million types of proteins can be built. Allah (SWT) has given the living cell the ability to produce 200,000 types of proteins. Similarly to the above mentioned structures, each protein molecule can exist in a right-handed or left-handed form. In the bodies of all living organisms the proteins have a left-handed form.
Similarly, nucleotides found on chromosomes, which are the smallest units that compose deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), have right-handed and left-handed forms. In the bodies of living organisms they are found in their left-handed form.
Increasing in structure size, each protein has its antiprotein and each body has its antibody. In addition, there are constructive proteins and destructive proteins. XI – XVII. Parity in matter and its compounds:
Parity is clearly evident in compounds which are composed of positive ions (cations) and negative ions (anions). Pairs can also be detected in the structure of an atom, where its nucleus has a positive charge and its electrons that revolve around the nucleus have an equivalent negative charge.
It has been proven that matter is composed of about 30 types of primarily chemical elements, each of which has its corresponding antimatter element. Similarly, particles of matter have their corresponding antiparticles. Matter as a whole has its corresponding antimatter. If a thing meets with its opposite (for example: every time a particle collides with an antiparticle) they annihilate each other, because they lose their material nature and are converted into energy, which declares the annihilation of matter. This brings closer the understanding of existence and non-existence; and the power to make something exist from a state of non-existence (i.e. to create without a previous model) or the power to annihilate to non-existence. Nothing has these powers except Allah (SWT), the Creator. In the same way, each form of energy has its opposite: electricity has positive and negative charges and magnetism has periods of normal magnetism and periods of reversed magnetism. Even light has clear parity, as it sometimes moves in the form of waves and other times in the form of particles.
It has also been proven that matter and energy are two sides of the same coin and two forms of the same essence that indicates the Oneness of the Creator (SWT). The creation of elements in the form of pairs, their conversion into energy that also takes the form of pairs and the ability to convert energy back to its material state, confirms the truth that creation was initiated from a state of non-existence and confirms the possibility of annihilating it back to a state of non-existence.
We can detect parity in all forms of creation, beginning from its smallest to its largest units. This is in such a way that the Creator (SWT) continues to possess, Him and Him alone, the attribute of Oneness rising above all of His creation. Furthermore, the standardized building pattern in creation signifies the Oneness of the Creator (SWT). In other words, each particle of an atom has its antiparticle and all of particles and antiparticles compose matter and antimatter; and antiparticles possess opposite properties to their corresponding particles, including opposite electrical charges, magnetism and rotational direction. Accordingly, whenever any or all of these opposites are found in one place, they annihilate each other. Glory be to Allah Who created creation in clear pairs that bear witness to His complete Divinity and Oneness, raised above all of his creation. Glory be to Allah Who created matter and antimatter and energy and anti- energy. Glory be to Him Who created all of these opposites at the same time and in the same amount, to prove to us the reality of creation from a state of non-existence, and the possibility of annihilation to a state of non-existence!
Glory be to Allah Who separated matter and antimatter to allow for the existence of this vast, intricately built universe, the movement of which is masterfully perfected; anything that pertains to it is perfectly regulated and it is built according to one pattern that attests to the Creator’s (SWT) Oneness. Glory be to Allah, who kept antimatter hidden somewhere in his realm until, if He wishes to annihilate the universe, He brings together matter and antimatter with His order “Be!” and it will be; and if He wishes, He resurrects everything by separating matter and antimatter again, through an order “Be!” and it will be. Glory be to Allah, Who affirmed this sign of creation and said what can be translated as, * “And of everything We have created pairs, that you may remember (the Grace of Allâh)”* (Surat Adh-Dhariyat (The Winds that Scatter):49)
This scientific truth has only been discovered by man in the last decades of the twentieth century. Its appearance in Allah’s Book (the Qur’an) that was revealed to the seal of His prophets (PBUH) 1400 years ago, proves, without a shadow of a doubt, that the noble Qur’an contains the words of Allah, the Creator (SWT), and affirms the prophethood of Mohamed Ibn Abd-Allah, blessings and peace from Allah be upon him, his family, his companions and all those who follow his guidance and invoke by his invocations until the Day of Judgment. All praise and thanks be to Allah, Cherisher and Sustainer of the ‘Âlamîn (mankind, jinn and all that exists). Link