Twin Zygosity Testing - $169
$169 we will DNA profile both twins to see if they have the
exact same DNA profile (being identical twins), or if they
each have their own DNA profile (as with non-identical twins
and siblings). To take this test at our unique price, you can
either call us on : 0800 DNA Test (0800 362 8378),
or click to order
the DNA collection kit (mouth swab).
Semi-identical twins is a new discovery to science, and we
have the ability to also test for these types of twins. To
test for Semi-identical twins we need to analyse the DNA from
both twins and both the parents
Twin Zygosity Test (testing 2 persons)
Semi-Identical Twin Test (parents + twins)
Identical twins occur when a single fertilized egg splits sometime
within the first few days after fertilisation. This accounts for around
30% of twins. When the young embryo splits, each half takes the exact
same DNA, so identical twins have exactly the same genetic makeup.
The making of Identical Twins
sperm and egg come together to share their genetic information
and create a new human being.
cells inside the egg divide and mulitply. Each new cell contains
an exact copy of the all the DNA that makes up an individual.
reasons still unknown, the embryo splits, and each half of the embryo
will form into a geneticially identical individual.
two twins each contain the same DNA sequences and are therefore
Non-identical or fraternal twins are created by two separate eggs
and two separate sperm that are fertilised during the mother's same
menstrual cycle. These types of twins share half their genetic information
and are no more or less similar than normal siblings.
The making of Non-identical Twins
Two separate eggs are created, each with their own genetic
These two eggs are each fertilised by a different sperm.
together in the womb, the fraternal twins will be born at the same
time. It is even possible for non-identical twins to have different