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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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PGT-A in young, good prognosis populations 6 December 2021 Comment
PGT-A did not improve live birth rate in clinic trial 29 November 2021 News
No difference in viability found between mosaic and non-mosaic embryos 22 November 2021 News
Embryonic stem cells can self-destruct when defective 8 November 2021 News
TV Review: Fighting for Fertility 25 October 2021 Review
Advances in Assisted Reproduction: What Can We Expect? 11 October 2021 Comment
Disparities in prenatal screening uptake revealed 4 October 2021 News
Improving sperm cell analysis: A new WHO manual 23 August 2021 Comment
NIPT may be less effective in twin pregnancies 26 July 2021 News
Fertilisation, the fourteen day rule, and beyond 7 June 2021 Comment
Genetics of the fetus and placenta control developmental abnormalities 10 May 2021 News
Human egg cells are often genetically abnormal 14 December 2020 News
Embryos with abnormal cells may be common and result in IVF success 20 July 2020 News
DNA crossovers drive healthy or abnormal sperm/egg cell division 8 June 2020 News
Book Review: The Dance of Life: Symmetry, cells and how we become human 9 March 2020 Review
What's the Truth about... 13 January 2020 Comment
'Rubber band' protein blamed for falling female fertility with age 25 November 2019 News
Artificial intelligence learns to identify good embryos for IVF 8 April 2019 News
Prenatal tests provide largest genetic study of Chinese people 8 October 2018 News
Genetic screening of embryos makes no difference to births 13 August 2018 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...