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The fusion of male and female gametes to form a zygote.

Articles using this Glossary Item


'Gene drive' could halt malaria transmission

30 November 2015 - by Ayala Ochert

Using 'gene drive' technology, scientists have created mosquitoes with malaria-resistant genes that could spread rapidly into wild mosquito populations, potentially wiping out the disease in some areas... [Read More]

Restoring fertility after cancer treatment: is hope on the horizon?

23 November 2015 - by Dr Edgar Mocanu

A recent study in mice raised the possibility of restoring ovarian function after chemotherapy. But before creating hype, the medical community has a duty to deliver evidence from human studies... [Read More]

Court orders contact between girls and sperm donor

19 October 2015 - by Chee Hoe Low

A UK High Court judge has ordered that the biological father of a teenage girl can maintain indirect contact with her, despite her opposition... [Read More]

HFEA releases 2014 incidents report

21 September 2015 - by Mary Yarwood

The Human Fertilisation and Embryology Authority has released its second annual report into adverse incidents at fertility clinics in the UK, showing a slight reduction in the overall number of reported problems following fertility treatment... [Read More]

Sperm cells attach to eggs with tiny 'harpoons'

07 September 2015 - by Chris Baldacci

Scientists have discovered that a protein in the head of sperm cells forms spiky filaments, which could act as tiny 'harpoons' that anchor the sperm to an egg... [Read More]

Donor IVF less successful with frozen eggs

17 August 2015 - by Meghna Kataria

Using frozen donated eggs over fresh ones for IVF hampers the odds of a successful live birth, a study has found... [Read More]

Radio Review: Rewinding the Menopause

10 August 2015 - by Barbara Czub

In this Radio 4 programme, Dr Aarathi Prasad investigates new research that is overturning decades-old assumptions about how human eggs are produced and what causes the menopause... [Read More]

Japan allows egg donation from strangers

03 August 2015 - by Ayala Ochert

Two women in Japan have received eggs from donors who are strangers – the first time this has happened in the country, following approval by an ethics committee earlier this year... [Read More]

Cutting-edge technology and mitochondrial diseases - where is the limit?

27 July 2015 - by Dr Dusko Ilic

Given the complexity of the technology, costs and risks involved, two recently described mitochondrial 'gene-correction' strategies will probably remain as proof-of-concept studies and are unlikely be of practical use in clinical medicine in the foreseeable future... [Read More]

Paternal age bioethics: have we missed the point?

13 July 2015 - by Dr Sarah Martins da Silva

Kevin Smith should be applauded for raising awareness of men's biological clocks, but his proposal to 'genetically improve' the human population through sperm banking seems preposterous... [Read More]

RNA findings could diagnose male infertility

13 July 2015 - by Rhys Baker

A test to diagnose male infertility that uses RNA as a biomarker has been developed by researchers in the USA... [Read More]

Poland passes IVF law

29 June 2015 - by Rachel Brown

Poland's lower house of parliament has approved a bill that, for the first time, provides statutory regulation of IVF in the country... [Read More]

US court grants woman right to disputed frozen embryos

29 June 2015 - by Julia Hill

An Illinois appeals court has reaffirmed a decision to grant a woman 'custody and control' of frozen embryos created with the sperm of her ex-boyfriend, despite his objections... [Read More]

Scientists produce sperm inside fish ovaries

15 June 2015 - by Dr Lucy Freem

Knocking out a single gene in adult female fish causes them to produce sperm inside their ovaries, study results show... [Read More]

Switzerland, inter-country surrogacy and public policy

08 June 2015 - by Michael Wells-Greco

On 21 May 2015 the Swiss Federal Court refused to register a male couple - who are in a civil partnership and living in Saint-Gallen, Switzerland - as the legal fathers of a child born following an inter-country surrogacy arrangement... [Read More]

Traces of past events written in our genes

08 June 2015 - by Julia Hill

Scientists have discovered that changes to DNA which occur during a person’s lifetime can be passed on to future generations... [Read More]

ICSI no more effective than IVF

26 January 2015 - by Dr Kimberley Bryon-Dodd

A US study has found that despite increased use of ICSI over recent years, the technique is not associated with any improved reproductive outcomes over conventional IVF... [Read More]

Known-donation contact case: Children's lives 'irredeemably marred' by dispute, says judge

10 November 2014 - by Chee Hoe Low

A six-year legal battle for contact over two girls conceived via known-donor fertilisation has had a 'destructive effect' on the girls' childhood, a High Court judge has warned in his third substantive judgment in the case.... [Read More]

Twelve healthy babies born following 'safer' IVF hormone treatment

28 July 2014 - by Purvi Shah

Twelve healthy babies have been born after trials of a hormone treatment called kisspeptin-54 that has been hailed as a safer way to mature women's eggs prior to IVF... [Read More]

UK Government plans to legalise mitochondrial replacement for IVF

28 July 2014 - by Rachel Brown

The UK Government has announced that regulations around the use of mitochondrial replacement techniques will be presented to Parliament in the next few months... [Read More]


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