Is there a way to find out if your twins are identical or not? Yes, there is: our DNA test will tell you the type of zygosity of your twins.
The Standard Twins Test evaluates if the twins have the same DNA profile (identical twins or monozygotic), or if they have different DNA profiles (being, therefore, non-identical twins). You only need to submit a DNA sample of each twin for this analysis.
Semi-Identical twins are a special case of non-identical twins. The Semi-Identical Twins Test evaluates if this is the type of zygosity the twins have. Of course, if the twins were identical, this test would also be able to detect it. For this analysis you need to submit a DNA sample of the twins and of both parents. You can also upgrade to this test is the standard one determines that the twins are non-identical.
These tests can also be used to determine the zygosity between triplets, quadruplets, etc. The tests will evaluate if all siblings are identical, non-identical, or if some of them are identical and others are non-identical.
Request the paperwork by email and follow the instructions to collect the samples with cotton buds. Request the paperwork here.
Identical twins are the result of one egg and one sperm. Therefore, they inherit the exact same genetic material from both the father and the mother. This is the reason why identical twins, also called monozygotic, have the same DNA profile.
Non-Identical twins are those who present different DNA profiles. The most common case of non-identical twins is that of dizygotic twins, who are the result of two eggs and two sperms. Therefore, each twin inherits different genetic material from both the mother and the father and, in consequence, they have different DNA profiles. Dizygotic twins are like any other two siblings, except they come from the same gestation. It is even possible that non-identical twins have different biological fathers, as the fertilisation does not have to happen at the same time for both twins.
Semi-Identical twins are a special type of non-identical twins, as they present different DNA profiles. Normally, semi-identical twins are the result of one egg being fertilised by two sperms. Then this egg splits, resulting in two embryos, each of them having inherited the same genetic material from their mother, but different material from the father. In order to determine if the twins are semi-identical, the sames of both parents are required.
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