Jones was born in Aberystwyth, Wales, his parents having met as students at the University of Aberystwyth. Until he was about ten years old the family were accommodated alternately at his paternal grandparents' house in New Quay and his maternal grandparents' house near Aberystwyth. Later the family moved to the Wirral because of his father's work, and returned to Wales for their holidays.

Jones' paternal grandparents lived in New Quay, Ceredigion, Wales. His paternal grandfather and great grandfather were both sea captains. His father was a PhD chemist and worked on detergents. Dylan Thomas was an acquaintance of his father. As a child Jones often stayed at his paternal grandparents' home and spent a lot of his time in the attic which contained some seafaring equipment, and boxes of books covering a wide variety of topics, many of which Jones read.

Jones' maternal grandparents lived in Bow Street, Ceredigion, near Aberystwyth. Jones spoke a lot of Welsh until he was 6 or 7 years old, and at that time many people in the locality preferred to speak Welsh, some speaking Welsh only. The Welsh Presbyterian church was the centre of the community, and Jones' great grandfather, William Morgan, was an incumbent at the church for about 40 years. Jones' grandparent's were strongly Presbyterian and spoke both English and Welsh, but preferred to speak Welsh. His grandfather, John James Morgan, was a school headmaster and used to take Jones on long walks in the countryside, as well as play chess with him. His mother Nancy was one of nine siblings, and Jones was often surrounded by relatives. Jones and a cousin spent a lot of time playing in the countryside on a local earth mound surrounded by a ditch and an outer wall, the remains of an ancient Norman castle. As an 8-year-old child he thought it was a pre-Christian Iron Age fort, and imagined it was where his Celtic ancestors might have lived. Jones observed the wildlife in the area and was particularly interested in birds.

Jones has BSc, PhD and DSc degrees from the University of Edinburgh together with a variety of honorary degrees. Much of his research has been concerned with snails and the light their anatomy can shed on biodiversity and genetics. His book In the Blood explores, confirms and debunks some commonly held beliefs about inheritance and genetics. Topics explored include issues as diverse as "lost tribes", European royal families, and haemophilia.

Professor Jones is a Distinguished Supporter of the British Humanist Association. He was awarded the second Irwin Prize for Secularist of the Year by the National Secular Society on 7 October, 2006.

Human evolution

Jones' view that in humans "Natural selection has to some extent been repealed"dates back at least to 1991 and has been the focus of a number of newspaper reports and radio interviews.His views are largely based on his claim that reduced juvenile mortality, decreasing age of fathers, and greater interconnectedness of populations in Western societies reduce evolution. Both the data supporting these assertions and his views of the way these factors influence evolution in populations have been extensively criticised by other academics.

Creationism

Jones has stated that creationism is "anti-science" and criticised creationists such as Ken Ham. Jones suggested in a BBC Radio Ulster interview in 2006 that Creationists should be disallowed from being medical doctors because "all of its (Creationism's) claims fly in the face of the whole of science" and he further claimed that no serious biologist can believe in biblical creation. For Jones, 'evolution is the grammar of biology'. Jones elaborated on his full position on creationism in a public lecture entitled 'Why creationism is wrong and evolution is right'.

Private education

In an interview on the BBC Radio 5 show '5 Live Breakfast' hosted by Nicky Campbell and Shelagh Fogarty on 13 January 2009, Jones described private schools as a "cancer on the education system".Jones cites private schools as one of the reasons that Britain remains as socially stratified as it is. Among the advantages in private schools compared to state schools, Jones listed smaller classroom sizes, highly-trained teachers, better facilities, and coaching through university interviews.

Religion

Jones, along with 54 other public figures, signed an open letter published on 15 September 2010 in The Guardian, stating their opposition to Pope Benedict XVI's state visit to the UK.

Books

• winner of (Aventis Prize winner)

Articles

• Steve Jones' View from the Lab
• Steve Jones: Why is there so much genetic diversity
• Steve Jones: Don't blame the genes

Jones was the 1991 Reith Lecturer on BBC Radio, with a series entitled The Language of the Genes, the basis of his 1993 book of the same name.

He presented In the Blood, a six-part TV series on human genetics first broadcast in 1996, see book of same name in bibliography.