Twin vs Petrovac-na-Mlavi Municipality

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Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell.

In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a singleton, and the general term for one offspring of a multiple birth is a multiple. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgangers.

Source: Wikipedia

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Petrovac (Serbian Cyrillic: Петровац), also known as Petrovac na Mlavi (Serbian Cyrillic: Петровац на Млави, "Petrovac-upon-Mlava"; Romanian: Piatra Mlave) is a town and municipality located in the Braničevo District of the eastern Serbia.

In 2011, the population of the town is 7,229, while population of the municipality is 31,259.

Source: Wikipedia