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An abnormal number of chromosomes, either too few or too many. Nearly all human body cells usually have a set of 46 chromosomes, while egg and sperm cells have 23.

Articles using this Glossary Item

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Back to basics: Improve access to fertility care by subtracting the 'add-ons' 19 March 2018 Comment
ESHRE 4785: Past, present and future 8 January 2018 Comment
Preimplantation genetic screening: unvalidated methods discard healthy embryos 11 December 2017 Comment
Older eggs less fertile due to poor cell division 10 April 2017 News
Mitochondrial replacement therapy and the welfare of the child 17 October 2016 Comment
Testing, Testing 1, 2, 3: PGS and PGD 26 September 2016 Comment
Gene involved in egg and sperm production linked to Down's syndrome 15 August 2016 News
Event Review: Genetic Screening and Respect for Persons 18 July 2016 Review
ESHRE 2016: Research highlights 11 July 2016 News
IVF: the next generation – first UK baby born after DNA screening technique 9 May 2016 News
Reassurance for mothers over mosaic aneuploidy in CVS 3 May 2016 Comment
Abnormal fetuses are highly unlikely to heal themselves 18 April 2016 Comment
Mouse study raises debate over embryo viability testing 4 April 2016 News
Reply to the signatories of the COGEN Consensus Statement 21 March 2016 Comment
Reply to Mertes, Repping and de Wert 'Stating the obvious: discarding embryos does not increase your chance of having a baby' 22 February 2016 Comment
Stating the obvious: discarding embryos does not increase your chance of having a baby 18 January 2016 Comment
Mitochondrial DNA test improves IVF success rates 26 October 2015 News
Prenatal test detects cancer in mothers 20 July 2015 News
Non-invasive prenatal testing for Down's syndrome - beyond the hype 22 June 2015 Comment
Down's syndrome blood test more accurate than existing screening 13 April 2015 News
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Events using this Glossary Item

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Testing, Testing 1, 2, 3: PGS and PGD
13 September 2016 6pm (registration), 6.30pm-8.30pm (discussion) Institute of Child Health, University College London, 30 Guilford Street, London WC1N 1EH
The Progress Educational Trust's FREE-to-attend event about testing and screening human embryos is taking place TOMORROW EVENING - book NOW. The event will be chaired by Dr Sue Avery, with speakers including Dr Tony Gordon, Dr Christine Patch, James Lawford Davies and Professor Michael Parker...