Select Top 1 'What is '+[Term] + '? - Definition of ' + [Term] + ' - DNA Testing Glossary' As PageTitle, Term + ' - DNA Testing' As PageKeywords, 'Visit to learn the definition of ' + Term + ' and how it pertains to DNA testing. ' As PageDescription, '' as MetaTags,'' as CSS, '' As Javascript from HH_Glossary_Data where GlossaryID = '19' What is Fraternal Twins? - Definition of Fraternal Twins - DNA Testing Glossary

The Absolute Standard in DNA Testing.
Discreet and Confidential, Guaranteed.
Call us at 1-866-833-6895

Fraternal Twins


Normally, there is only one egg available in the womb at any given time ready for fertilization. If there are two or more eggs present and they are fertilized, the result is fraternal twins (or triplets, etc.). Because the eggs are fertilized by different sperm, each resulting child's DNA will be different, and thus their genetic blueprints will be different. They may look very different physically, sound different, act different and have different health issues. Fraternal siblings may even be different genders. Fraternal twins will likely share some similar characteristics, however, as they have both inherited DNA from the same parents. The likelihood of having fraternal twins is determined entirely through the mother and factors affecting her reproductive system. A twin zygosity test can determine whether siblings are identical or fraternal twins.

  • Accredidations and affiliations

    Quality is Assured

    Click here to see a list of our accreditations and affiliations

  • Testimonials

    Satisfaction Guaranteed

    Click here to read selected testimonials about our services and products

  • Accredidations and affiliations

    How Do the Tests Work?

    Click here to read easy-to-understand instructions about our tests