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Zygosity Twin Testing

Zygosity Twin Testing can accurately determine whether twins are identical or fraternal. Twins are classified on the basis of similarity between their DNAs; monozygotic twins or identical twins, have identical genetic blue prints, whilst dizygotic twins or non-identical twins do not. Fraternal twins are sometimes referred to as false twins since they are not technically twins as their genetic profiles are not identical. In fact, non identical twins are no different, genetically speaking, to normal siblings. Monozygotic twins are formed from two independent sperm cells and ova, each fertilised egg having its distinct copy of DNA.

Dizygotic twins develop one next to the other in the womb and when it comes to their DNA, they are no different to normal siblings or half siblings. Twins of this type may even have different fathers if the woman had intercourse with two different men is a small time frame; in this case, two independent eggs are fertilised in that short time frame by sperm cells from different men. Identical Twins are considerably rare and form approximately 2% of the world’s total population. The frequency of identical twins born varies from culture to culture, with the rate of monozygotic twins being higher amongst certain ethnic groups and in certain countries. Most identical twins are born in Central Africa. The Republic of Benin has almost 30 identical twin births per 1000- by far the highest in the world. Twin testing is the most accurate way of knowing whether twins are fraternal or identical. The results of the test can be used for a number of reasons, amongst which medical. To find out more about Twin DNA testing or Twin Zygosity testing visit the suggested pages.

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  • Home
  • DNA Tests
    • Paternity Tests
      • Home Paternity Test
      • Legal Paternity Test
      • Prenatal Paternity Test
      • Immigration DNA Test
      • Discreet Test
    • Relationship Tests
      • Siblings DNA Test
      • Aunt & Uncle Test
      • Grandparentage Test
      • Twins DNA Test
      • Y Chromosome Test
      • Maternity Test
    • Prenatal Tests
      • Prenatal Paternity Test
      • ‘Prenatal Peace’ – Non-Invasive Prenatal Genetic Screening Test
      • Baby Gender Testing
      • Prenatal Package
    • Ancestry Tests
      • Ancestral Origins Test
    • Health & Wellbeing Tests
      • NutriFit
      • Nutri Plan
      • NutriFit Premium (NutriSport)
      • Autism Panel
      • Children’s DNA Discovery
      • Lactose Intolerance DNA Test
      • Celiac Disease Genetic Testing
      • Genetic Predisposition Test
    • Drug Tests
      • Hair Drug Testing
    • Clinical Tests
      • Inherited Diseases Panel
      • Newborn Genetic Test with NOVA™
      • Pharmacogenomics PGx
    • Oncology Tests
      • Inherited Cancer Panel
      • Targeted Sequencing Panel 22 – TSP22™
      • Targeted Sequencing Panel 50 – TSP50™
      • BRCA1 & BRCA2 Genetic Screening
      • Tumour Mutational Burden
      • Sarcoma Panel
      • Circulating Cell-free tumour DNA (cfDNA)
      • Oncomine Comprehensive Targeted Sequencing of DNA and RNA in Cancer
      • Whole Exome Sequencing in Cancer
    • Animal Tests
      • Dog Allergy Test
    • Other Tests
      • Infidelity DNA Testing
      • Semen Detection Testing
      • DNA Profiles
  • About Us
    • Accreditation
    • DNA Testing Laboratory
    • Job Opportunities
    • Media & Press
      • Company News
    • Award in Customer Service
    • Charity Work
  • Testimonials
  • Blog
  • Resources
    • Kits in Different Locations
    • Frequently Asked Questions
    • Payment Options
    • Collecting Samples
    • Create Your Own DNA Kit
    • Understanding Results
    • Multimedia
    • Knowledge Base
  • Contact Us
    • Worldwide Offices
  • Order a DNA Test!

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EasyDNA,
3/5 Sesame Ct
Slacks Creek, QLD, 4127

Tel: +61 1300 482 165
Email: info@easydna.com.au

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COVID-19 STATEMENT

We are monitoring the ongoing Coronavirus (COVID-19) pandemic closely and are complying with the Government’s guidance for the workplace.

Our offices are still open, and we are processing samples and fulfilling orders. To keep you safe we are washing and sanitising our hands before packing orders and they are then placed in our daily mailing services. Unfortunately we cannot allow drop-ins at our office until further notice and all sample collection appointments have been postponed.

The laboratories are still open, are adhering to local guidelines and are processing samples as usual. If delays due to social distancing measures are likely to affect your results due date, then we will inform you immediately.

We are experiencing some delays with all postal and courier deliveries. If you have posted samples back to us but have not received notification that they have been received please track them and check your junk or spam folder before contacting us to request an update.

Please quote your case reference number when contacting us to enable us to respond more quickly.

All results are still being issued on time and you will be contacted if we anticipate any delay with your case.