Just like the mechanical components in cars or computers, the molecules inside a cell can sometimes malfunction. When this happens during DNA replication, the result is an unpredictable change in ...

A). It is first converted to 5-methyltetrahydrofolate (MTHF) and then combines with homocysteine, in a reaction catalyzed by vitamin B12-dependent methionine synthetase, to produce L-methionine.