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twin sisters
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Twin Sisters

Zygosity
Zygosity is the degree of identity in the genome of twins. There are five common variations of twinning. The three most common variations are all fraternal (dizygotic):
• Male–female twins are the most common result, 50 percent of fraternal twins and the most common grouping of twins.
• Female–female fraternal twins (sometimes called "sororal twins")

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Filename:453188.jpg
Album name:People & Humanity
Rating (1 votes):55555
Keywords:#twin #sisters
Filesize:35 KiB
Date added:Feb 03, 2012
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