Online Order special

$165 All-in-One
DNA Paternity Test

FREE
Sample Collection Kit & 
Return of Samples

Result within 5-7 Days

eClient
  Testimonials  
 
"Thank you so much for the prompt and precise responses throughout my search. Not only did you inform me, you did it with compassion and sensitivity. I had researched a handful of DNA sites, verifying accreditation, etc., before I made a decision. I want you to know that it was your attention to 'me' and your customer service that was the deciding factor to choose Bio-Synthesis. Thank you, again, for everything."
 
  Anita, 2007  
  More Testimonails  
     
 
Twin Zygosity DNA Testing
 
 
  Initiate Test | Participants | Type of Samples | Procedure | How to Video | Understanding Results | Form  
Twin siblings By using our Twin Zygosity DNA Test, twin siblings can be determined if they are fraternal or identical.

Click here to order your Free DNASwabTM DNA Collection Kit
You can also call our DNA Specialists at : DNAtest@800dnaexam.com or
Call 800-DNA-EXAM to speak with a representative.

Identical Twins
Fraternal Twins
Special DNA Tests - Twin Zygosity DNA Testing


Identical twins occur when a single egg is fertilized with a single sperm and splits very early during development. Each division contains the exact same genetic potential.

The DNA profiles for identical twins will be identical. Additionally, the physical attributes of identical twins will seem similar for traits such as hair color, hair texture, eye color, height, and weight. They must also be of the same sex.

Fraternal Twins occur when two sperm fertilize two eggs. In this case, the amount of DNA in common between the twins is generally comparable to that of full siblings. Furthermore, if the two sperm cells originated from two different men, then the twins would represent half-siblings. Additionally, physical attributes may not be similar, and they also may not be of the same sex.

Interpretation
After testing the samples, a DNA profile for each twin will be established. If the profiles are different, then the twins are fraternal, and if the profiles are identical, then the twins are identical. Results are available within 5-7 business days after samples have reached our laboratory.

 Order Now  
$500.00 Twin Zygosity Test

Includes one set of DNASwabTM DNA sample collection kit and FREE delivery.

*Prices valid only in the USA
*Prices outside the USA vary by country
 
 Twin Zygosity DNA Test Summary  
Order DNA Test
Order a test online or call our DNA specialists at toll free 800-DNA-EXAM/888-786-9323 to request a FREE DNASwabTM DNA Sample Collection Kit. Or, for legal purposes, arrange an appointment for DNA sample collection at a network facility nearest you.
Collect DNA Samples & Return
Samples are obtained using a buccal swab, then returned to our lab.
Receive Results
Results will be available within 5-7 business days, upon our receipt of all samples and will be mailed to the authorized designee(s).
*For detailed instructions, click here
 
 
Print This Page
Sample Collection  
Request Info  
Order  
 
 
 
Click to verify BBB accreditation and to see a BBB report.
 
Legal | Press Release | More Resources | Terms & Conditions | Privacy Policy | Links | SiteMap | Blog | All Rights Reserved By 800DNAEXAM.com © 2006 Designed by Segnant