- The timelapse method can spot delays in the embryo's development at crucial stages
- The condition, called aneuploidy, means the embryo can have extra or missing chromosomes
- It is common in human embryos and a major cause of fertility treatment failure and miscarriage
- Researchers say timelapse imaging offers a simpler alternative to spot problems
More top news
The pensioner, who is in her 70s, says her daughter has suffered from Huntington's disease.
US singer John Legend said he was "moved" by footage of the teenager singing one of his songs.
John Noakes was Blue Peter's longest-serving presenter.