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Yoselin’s first job, at 16, was babysitting Charlotte and her two younger siblings, fraternal twins.

The results were consistent across both identical and fraternal twin pairs.

The girls are described as fraternal twins - with rare separate birthdays.

Portugal found that the looking preferences of the genetically identical twins were more similar than those of the fraternal twins.

In a nice pairing, identical twin Catholic clergy baptized a pair of fraternal twins during a recent Mass in Pennsylvania, The Times’ Sean Salai reports.