31.   The strange particles are composed entirely of amino acids shaped into spherical strands and contain no genes at all.

32.   The vast majority are retained for use by the couples whose genes they contain.

33.   Then they pour a solution containing the gene copies over a nylon strip embedded with all the variants of the six genes.

34.   Then Wilmut removed the nucleus, containing the genes, from an egg cell taken from another ewe.

35.   Though yeast is undeniably a simpler life form than humankind, its cells contain many genes that resemble ours.

36.   Yieldgard, to be introduced this year, contains a gene developed by Monsanto that provides resistance to the European corn borer, a pest.

37.   Bt-corn, which contains genes from bacteria known as Bacillus thuringiensis, is resistant to the corn borer pest.

38.   But this month, Nextran Inc. announced it had successfully bred pigs that contain human genes to reduce rejection.

39.   Greenpeace says there is evidence some biofoods are a health risk to people and animals because they contain genes that increase resistance to antibiotics.

40.   It also contains genes resistant to a herbicide, and to the antibiotic ampicillin, which have caused concern to environmentalists.