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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.
Apr 25, 2023 · Learn about the different types of twins, from identical to conjoined, and how they are formed in the womb. Find out the risks, rarities, and characteristics of each twin type.
Mar 15, 2023 · Learn about the different types of twins, how they form, how similar they are and how common they are. Find out the factors that affect twinning, the rates of twinning worldwide and the myths about placentas.
Learn why twins happen, how common they are, and what increases the likelihood of conceiving them. Find out about the types of twins, the risks of multiple pregnancies, and the myths about how to have twins.
Feb 23, 2022 · Learn about the different types of twins, how they develop, and why it matters for health and genetics. Find out how to tell if twins are fraternal or identical, and what to expect from a twin pregnancy.
Research on twins helps answer questions about many aspects of being human. About three or four in every 1000 births are identical twins.
The Lives and Relationships of Twins. Reviewed by Psychology Today Staff. At the core of many people’s fascination with twins is the belief that, at least in the case of identicals, their minds...
