6.40 Genetic Expression. 7.5 Volcanoes.
7.30 Statistics: Sampling.

The Embassy World Professional Snooker Championship from Sheffield.
The second of the semi-finals continues this morning. DAVID VINE introduces coverage. Commentators
TED LOWE , JACK KARNEHM
CLIVE EVERTON , VERA SELBY

Today HRH The Prince of Wales visits the Open University campus at Milton Keynes to open the new BBC Open University Production Centre and also to receive the honorary degree of Doctor of the University at a special congregation. This live outside broadcast covers the degree ceremony, including the Prince of Wales' speech of reply and the presentation of some 40 new Bachelors of Arts to the Chancellor, Lord Briggs of Lewes
Music performed by the PHILIP JONES BRASS ENSEMBLE
Commentator JAN LEEMING Executive producer NAT TAYLOR
Producer ROGER TUCKER
(Status Quo - Live on 1 in the presence of HRH The Prince of Wales: BBC1. 9.25)

The Embassy World Professional Snooker Championship
At 3.15 the final nine frames of the first semi-final.
Racing from Newbury
2.0 A Match (Urn)
A head-to-head battle between two top international jockeys.
2.20 Hue-Williams Guaranteed Stakes (5f)
2.50 Golden Eagle Stakes (handicap. 1½m)
3.20 Sir Charles Clore Memorial Stakes dim)
3.50 Ultramar Stakes (handicap. 7f and 60 yards)
Introduced by JULIAN WILSON
Commentators PETER O'SULLEVAN JIMMY LINDLEY and JOHN HANMER
Racing TV presentation by BILL TAYLOR

This programme looks at the practice and content of the Sikh religion in Leeds. It concentrates on Sunday worship and a marriage which happens (as is quite usual) during the course of that worship, and shows some of the problems inherent in being a Sikh in Britain.

A BBC/Open University production

helps you plan your weekend by previewing daytime programmes of special interest from the Open University. This week's selection includes The Chateau and the Cottage and Einstein's Theory.

A season of classic feature films
Starring John Barrymore 'The Great Profile'
This definitive version of the Robert Louis Stevenson classic is shown today in a newly tinted version with an added musical soundtrack.
Screenplay by CLARA S. BERANGER from the novel by ROBERT LOUIS STEVENSON
Organ music by LEE ERWIN
Directed by JOHN S. ROBERTSON
(First showing on British television)

Frame of the Day
DAVID VINE introduces a match- winning frame from the first semi-final played this afternoon.

with subtitles, followed by Weather

A series of six programmes made by young people 5: Girls are Powerful
' No more stereotypes, no more false assumptions. Being girls means being free to choose the way we lead our own lives. See us to explode the myth of marriage! Expose the nonsense of the nuclear family! Examine the deceit of doctors! You'll wish that girls like you were girls like us.' Girls from London and Scotland join forces to produce their own programme which includes filro, drama, and live music from SOPHISTICATED BOOM-BOOM and JAM TODAY.
Made with the help of the COMMUNITY PROGRAMME UNIT

from
Barnsdale Geoff Hamilton and Clay Jones look forward to summer colour, sowing biennials, preparing hanging baskets and training fuchsias. They sow some of summer's luxuries: courgettes, beans, cucumbers and squashes.
Produced by JOHN KENYON BBC Birmingham
Gardeners' World Vegetable Book, £1.50 from booksellers

They've Got You Taped!
In Britain we pride ourselves on being one of the most democratic countries in the world. We are also very secretive. Personal information about every one of us is stored in files and on computers, yet we have little right to find out exactly what has been recorded. We do not know the extent of this information-gathering, or how it is operated and used.
Margaret Jay reports on the rapidly growing problem of privacy and data protection, on measures which have been taken in America, and on our own Government's plans for new legislation.
Producer JAMES HOGAN Editor PETER 1BBOTSON

by DESMOND LOWDEN with Maurice O'Connell , Coral Atkins and Christine Hargreaves
' Motors can stall, shooters can jam. But Jake's end of it'll be all right.' Jake's a professional, a married man with a reputation to maintain-and a bank to rob.
Music NICK BICÃT
Designer CHARLES BOND
Film editor CHRISTOPHER ROWLANDS Photography JOHN Williams Producer MICHAEL WEARING
Director JIM O'BRIEN. BBC Birmingham

The Embassy World Professional Snooker Championship from the Crucible Theatre, Sheffield.
One finalist is already known, the other will be revealed after this evening's session as the second semi-final is concluded.
DAVID VINE introduces coverage from tonight's nine-frame session.

The Embassy World Professional Snooker Championship
DAVID VINE introduces highlights from tonight's semi-final and reveals the two men who will start out tomorrow on a marathon 35-frame match that will make one of them a fortune.