41.   But scientists routinely copy human genetic material to make medicines for disorders including heart disease and cancer.

42.   But some scientists doubt that they can cause disease because unlike other infectious agents, they contain no genetic material.

43.   But Tartaglia points out that a disease like obesity, which involves the interaction of multiple genes, is most accurately studied in twins who carry identical genetic material.

44.   But the heat of cremation, the anthropologist said, would have destroyed the organic material of the bone, including genetic material like DNA.

45.   But, he contended, enough of the original genetic material lives on in the Maine fish to warrant federal protection.

46.   By the time the sperm cell arrives at its destination, its genetic material is freed and replication can begin.

47.   Called transgenic technology, the method involves introducing copies of human proteins into the genetic material of animals.

48.   Cano was already well known in scientific circles for his attempts to clone genetic material from insects trapped in ancient tree sap.

49.   Called transgenic technology, the method involves introducing copies of DNA for a specific human protein into the genetic material of animals.

50.   China subsequently imposed rules requiring all foreigners to get approval before exporting genetic material and to share scientific or financial proceeds with the Chinese.