hyperpigmentation (increased skin darkness) or hypopigmentation (increased skin lightness) in small patches or across areas as large as half of the body. two different-colored eyes. genitals that have both male and female parts (intersex), or that look sexually unclear (this sometimes results in infertility)

What is an example of chimerism?

The most widely known examples of twin chimerism are blood chimeras. These individuals are produced when blood anastomoses (connections) form between the placentas of dizygotic twins, thereby enabling the transfer of stem cells between the developing embryos.

Can you tell if you absorbed your twin?

Someone may not know that they absorbed their twin, since the distribution of cells from their twin throughout the body can be random! If you're a chimera, a DNA test might be able to reveal your chimeric status.