Chromosomes are tightly packaged bundles of DNA, the chemical that encodes genetic information.
Most of the cells in a human body have a set of 46 chromosomes in their nucleus, while egg and sperm cells have only 23.
Separately, each of the mitochondria in each cell of a human body contain their own DNA, in the form of (multiple copies of) a circular chromosome.
Clinical embryologist and fertility clinic founder Dr Cristina Hickman shares her thoughts on preimplantation testing for polygenic traits ...
Variants in maternal genes that increase the risk of aneuploidy have been identified...
Hitler's DNA has been identified and sequenced for the first time. Senior science writer, Dr Matteo Cortese, reviews a BBC programme investigating what the DNA reveals about Hitler's heritage – discussing the technology at its core: polygenic scores...
Cytomegalovirus, a virus that can cause hearing loss and other neurodevelopmental delays in infants, can now be detected during prenatal screening...
Some UK patients are seeking preimplantation genetic testing involving polygenic scores, placing fertility clinics in an awkward position...
The 3D structure of the human genome has been mapped at the level of individual bases, defining complex structures which control how DNA functions within the cell...
A novel method for visualising human blastocyst development – which has led to findings with implications for PGT-A – is described by Dr Ahmed Abdelbaki, a postdoctoral researcher in the Niakan Lab at the University of Cambridge...
An embryo that originally had three pronuclei resulted in a healthy baby after one pronucleus was microsurgically removed...
James Watson, the co-discoverer of the DNA double helix structure, has died at the age of 97...
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