21.   The genes are sorted and inserted into a standard laboratory host bacterium, which is screened to see if its new gene sequences manufacture any potentially useful drugs.

22.   Then a team of French biologists sampled the Manado coelacanth and studied its gene sequences to compare them with the Comoro fish.

23.   To get a better answer, he said, far more gene sequences should be studied for more mammals.

24.   Two people can have different gene sequences for the same receptor involved in pain control.

25.   By knowing the gene sequence of this group of microbes, he said, it may now be possible to solve the puzzle of virulence.

26.   Collier then searched the libraries of human genetic information for anything that matched the rat gene sequence.

27.   Collins then searched the libraries of human genetic information for anything that matched the rat gene sequence.

28.   He found the identical gene sequence in human DNA.

29.   The gene sequence of some viruses are known, but viruses are much simpler in DNA structure because they lack the ability to live independently.

30.   While the government maps produced so far are only rough estimates of exact gene sequences, scientists said they are still immensely useful tools.