11.   The academics spent years trying to locate the gene.

12.   The delay in locating the gene may not be entirely bad.

13.   This helped him locate a gene in the virus that gives the order for production of a tumor-making protein.

14.   And other scientists are doing DNA research that may locate genes that influence strength and fitness, she said.

15.   Its genetic model is relatively simple, but it is so similar to other grains that scientists can use the rice map to locate genes in those crops.

16.   Researchers say they have all but located a gene responsible for a heart-rhythm abnormality that can cause young, seemingly healthy people to drop dead without warning.

17.   The gene was located by studying a mouse species that naturally develops a severe progressive arthritis.

18.   Why are genes located where they are?

19.   Locating a gene is the first step toward identifying it.