Adenine prototrophic transformants were selected. |
Such streaks do not yield confluent growth on medium without uracil, in contrast to prototrophic recombinants. |
All the resulting strains were prototrophic. |
An organism which is capable of making use of an element in the free state is said to be prototrophic for that particular element. |
The cassettes were introduced into MR12 and yielded 15, 10, and 20 uridine prototrophic transformants, respectively. |
A prototrophic control strain was also engineered. |