The Chart

Mom gave a blood sample. Dad spit. The entire genome of their fetus was born.

Researchers at the University of Washington have, for the first time, done a near-total genome sequence of a fetus in this way.  Scientists published the results of this study in the journal Science Translational Medicine, suggesting that thousands of genetic diseases could be detected in children while they are still in the fetal stage.

Everyone has two copies of the human genome: One inherited from their biological mother and one from the biological father. With technology that’s being used for genetic sequencing these days, it’s not possible to say which variants on the chromosome you inherited from which parent.

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