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Glossary

Chromosome

Chromosomes are tightly packaged bundles of DNA, the chemical that encodes genetic information. Nearly all human body cells have a set of 46 chromosomes, while egg and sperm cells have 23.



Articles using this Glossary Item

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A scramble for headlines or an optimistic (sunny side up) contribution to research on fertility preservation?

12 February 2018 - by Professor Robin Lovell-Badge

The problem of fertility preservation for girls and women undergoing cancer treatments has been a subject of research for many decades. The recent study by McLaughlin and colleagues from Professor Evelyn Telfer's lab at the University of Edinburgh, UK, is aimed at finding a solution to this problem, with the claim that they have produced mature human egg cells in the lab for the first time... [Read More]

Book Review: The Telomere Effect - A Revolutionary Approach to Living Younger, Healthier, Longer

05 February 2018 - by Dr Jess Buxton

We are already into the second month of 2018, so if you made New Year's resolutions then the chances are that, like me, you've long ditched them – especially any regarding your health. It seems that changing old habits is hard, even those that we know will increase our risk of succumbing to disease and disability... [Read More]

High-dose gene therapy appears toxic in monkeys and piglets

05 February 2018 - by Ewa Zotow

Animals given high doses of gene-carrying viruses in a new gene-therapy trial showed signs of severe toxicity.

Loops or spirals? 150-year mystery of what happens to DNA in cell division solved

22 January 2018 - by Dr Rachel Huddart

How DNA is accurately split between cells when they divide has finally been solved by researchers... [Read More]

What next for genome editing? Politics and the public

15 January 2018 - by Eleanor Taylor

The ever-expanding limits of human reproduction are creating complex ethical and political challenges. One topic that has generated much contention is the possibility of editing the genome of human embryos... [Read More]

Offer egg freezing to all with medical need, say guidelines

08 January 2018 - by Sam Sherratt

The NHS should offer patients the chance to freeze their eggs before they receive treatments that could damage their fertility, say new guidelines published by the British Fertility Society.

Sperm, eggs and embryos: how do we define them as science offers new possibilities?

18 December 2017 - by Dr Avi Lerner

The Progress Educational Trust (PET)'s Annual Conference 'Crossing Frontiers: Moving the Boundaries of Human Reproduction' discussed some of the most important ethical and scientific questions facing human reproduction. The first session, chaired by Sarah Norcross, the Director of PET, tackled the very fundamentals. What is a sperm? What is an egg? And what is an embryo?... [Read More]

Preimplantation genetic screening: unvalidated methods discard healthy embryos

11 December 2017 - by Norbert Gleicher

A seemingly brilliant hypothesis of preimplantation genetic screening arose in the 1990s when Dr Yuri Verlinsky proposed using polar body biopsies to detect chromosomal abnormalities in embryos prior to transfer in IVF... Healthy embryos are discarded by unvalidated PGS

Illumina wins NIPT patent case in UK High Court

27 November 2017 - by Dr Rachel Brown

The UK Patents Court has ruled that two separate non-invasive prenatal tests infringe patents licensed by the US firm Illumina... [Read More]

New prenatal DNA test for Down's syndrome is more accurate and cheaper

13 November 2017 - by Dr Barbara Kramarz

A new prenatal screening method for Down's syndrome, Edwards syndrome and Patau syndromes is safer, more reliable and cheaper than existing approaches, a study has found... [Read More]

Sleep duration linked to sperm structure

23 October 2017 - by Taqdeer Sidhu

Sleep duration is associated with sperm integrity, according to a recent study in China... [Read More]

Number of mutations needed to cause cancer calculated

19 October 2017 - by Charlott Repschlager

Between one and 10 mutations are required for a healthy cell to turn cancerous... [Read More]

Doubt over human embryo editing study

04 September 2017 - by Annabel Slater

A group of scientists have challenged the landmark study which reported the first successful editing of human embryos for a genetic disease... [Read More]

Screen all chromosomes in prenatal embryo testing, says study

04 September 2017 - by Dr Rachel Huddart

Current prenatal chromosome screening tests could miss rare chromosomal abnormalities and lead to inaccurate results... [Read More]

Event Review: Wellcome Collection Packed Lunch - DNA Repair

17 July 2017 - by Charlotte Spicer

It’s not often a PhD student finds themselves with a whole hour to break for lunch. So when asked to review one of the Wellcome Trust’s 'Packed Lunch' talks, I jumped at the chance to make better use of some rare free time. The monthly event, situated at the Euston-based Wellcome Collection, promises to feed your curiosity... [Read More]

Genes influence ability to read people's minds through their eyes

12 June 2017 - by Charlotte Spicer

Our ability to read people's thoughts and emotions through their eyes is influenced by our DNA, new research suggests... [Read More]

Genetic disorders: empowering patients and families through information

12 June 2017 - by Arti Patel

'I've got the diagnosis, now what?' is one of the first questions families ask when they contact us at Unique, the UK-based organisation for rare chromosome and genomic disorders... [Read More]

Australia upholds the ban on sex selection: a partial victory in an ongoing struggle

22 May 2017 - by Dr Tereza Hendl

Australia recently saw important developments in the field of assisted reproductive technologies, as the National Health and Medical Research Council released its revision of the Part B of the Ethical Guidelines on the Use of Assisted Reproductive Technology in Clinical Practice and Research. Among other topics, this section is concerned with the regulation of sex selection... [Read More]

Resistance to severe malaria identified in gene variants

22 May 2017 - by Dr Molly Godfrey

A gene variant which gives protection against the most dangerous form of malaria has been identified... [Read More]

Older eggs less fertile due to poor cell division

10 April 2017 - by Emma Laycock

Researchers in Canada have found that age-related infertility may be due to older eggs dividing poorly, leading to errors in chromosome number... [Read More]

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Events using this Glossary Item

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...
Genetic Testing in the 21st Century: Should We Screen the Human Embryonic Genome before Implantation?
08 March 2011 1.15pm-1.55pm Darwin Lecture Theatre, Darwin Building, University College London, Gower Street, London WC1E 6BT
A presentation by Dr Joyce Harper to mark International Women's Day...
European Molecular Biology Organisation Meeting
29 August 2009  Amsterdam RAI, 22 Europaplein, Amsterdam 1078 GZ, Netherlands
The 1st annual conference of the European Molecular Biology Organisation...


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