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DNA Testing for Twins

Identical. Fraternal.

Twin Zygosity DNA testing determines if two siblings are identical or fraternal twins. Genetic profiles (DNA results) for identical twins match exactly; fraternal twins have different DNA profiles.

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Twin Zygosity DNA Test
for only $195

Determine if twins are identical or fraternal. We'll send a DNA collection kit directly to your home.

TWIN ZYGOSITY

Identical Twins

Identical twins result when one egg is fertilized by one sperm cell, and then divides and separates. These divided cells develop into identical twins. The DNA profiles for identical twins will also be identical The physical attributes of identical twins appear to be the same for traits such as hair color, hair texture, eye color, height, and weight. They must also be of the same sex.

Fraternal Twins

Fraternal twins result when two eggs are independently fertilized by two different sperm cells. The DNA profiles for fraternal twins will not be identical; their biological relationship is similar to full-siblings that are born at different times. The physical attributes of fraternal twins can be very different - they may even be different genders. However, some fraternal twins apprear to have the same traits such as hair color, hair texture, eye color, height, and weight; but, their genetic DNA profiles will be different.

HOW DNA TESTING WORKS

DNA Testing with IDENTIGENE is fast, easy, and accurate. Simply order a DNA Test Collection Kit online or call 1-800-DNA-TYPE (800-362-8973) to place your order. Collect DNA samples from each participant using the safe and effective cheek swabs provided in the kit. Send the samples to IDENTIGENE using the postage-paid return envelope or via express courier.

You choose how results are reported: Access your DNA test results online using the email address and results password you provide on the order form. You can also access your results over the phone (password required) and/or have a hard copy of the test results mailed directly to you.

1. Purchase a DNA Test Collection Kit online or at the store.
2. Collect DNA cheek cell samples from the participants.
3. Send DNA samples to IDENTIGENE for testing.
4. DNA Testing Results provided by mail, phone or online.

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For assistance. more information, or to place your order by phone, call 1-800-DNA-TYPE (800-362-8973).

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Twin Zygosity DNA Test
Results in 3-4 weeks. Includes 2 Twins. $195

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IDENTIGENE DNA Testing Center, 2495 South West Temple, Salt Lake City, UT USA | 1-800-DNA-TYPE (800-362-8973) | Direct: (801) 462-1446 | Fax: (801) 462-1403
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