A chemist synthesized a new chemical X which is highly mutagenic. He also tested the capacity of mutation induced by X to be reversed by other known mutagens and obtained the following results:
|
Mutation produced by |
Reversed by |
||
|
Nitrous acid |
Hydroxylamine |
Acridine orange |
|
|
Yes |
Some |
No |
|
Which one of the following conclusions is appropriate?
1
X causes transversion
2
X causes transition
3
X causes single-base insertion
4
X causes single-base deletion