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curly blonde twins reveals on the couch
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Curly Blonde Twins Reveals On The Couch

Human twin studies
Twin studies are utilized in an attempt to determine how much of a particular trait is attributable to either genetics or environmental influence. These studies compare monozygotic and dizygotic twins for medical, genetic, or psychological characteristics to try to isolate genetic influence from epigenetic and environmental influence. Twins that have been separated early in life and raised in separate households are especially sought-after for these studies, which have been used widely in the exploration of human nature. However, the utility and accuracy of these twin studies has been called into question and remains controversial. Classical twin studies have are now being supplemented with molecular genetic studies which identify individual genes.

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Filename:410787.jpg
Album name:Babes
Rating (1 votes):55555
Keywords:#curly #blonde #twins #reveals #couch
Filesize:68 KiB
Date added:Sep 04, 2011
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