1.   Consider the case of a new, supercharged mutant gene that appears in a bacterium.

2.   If that spore contained the mutant gene, all the cells of the new plant will contain the mutant gene.

3.   In heterozygous females, pre-B cells whose active X chromosome expresses the mutant gene would not terminally differentiate and proliferate.

4.   Once isolated, the mutant gene will be the second gene known to increase the risk for the brain disorder.

5.   Probably, the presence of a mutant gene just brings an individual one step closer to the possibility of cancer.

6.   We are considering making a strain of transgenic sheep containing the mutant gene that causes cystic fibrosis in humans.

7.   A MUTANT is the descendant of an individual which has passed on a mutant gene.

8.   And a woman who learns she carries a mutant gene can do little to prevent the disease.

9.   As for the mutant gene that causes dwarfism, Reed never would have wished it upon his son but now can honestly say it has been a blessing.

10.   At least five mutant genes are thought to be involved in obesity in mice.