Scientists decode the bonobo genome, making it last great ape to have its DNA sequence laid bare, following the chimpanzee, orang-utan and gorilla.
A whole-genome study confirms the existence of four distinct species of giraffes, corroborating the conclusions of a 2016 DNA study; previously, it was believed that all giraffes were members of a single species. The study also supports the existence of seven subspecies of giraffes.
Chinese state news agency Xinhua reports that He Jiankui, who last year announced the birth of babies with modified DNA, was sentenced to three years imprisonment and a fine of 3 million yuan, for "illegal medical practice". Two other defendants are given lesser sentences.
Prosecutors discuss a plea deal (avoidance of the death penalty in exchange for a likely sentence of life in prison without parole) for the surviving Boston bomber, Dzhokhar Tsarnaev. Police have taken DNA from Tamerlan Tsarnaev's wife and are exploring the brothers' connection to two deceased Russian extremists.
Shakil Afridi, a Pakistani physician who helped the CIA to track down Osama bin Laden by collecting DNA samples from residents of bin Laden's compound, is sentenced to 33 years' imprisonment for treason.