The phrase "altered by the addition of" is correct and usable in written English.
It can be used when describing a change that occurs as a result of adding something to an existing item or concept.
Example: "The recipe was altered by the addition of fresh herbs, enhancing its flavor significantly."
Alternatives: "modified through the inclusion of" or "changed due to the addition of".
This is the process by which DNA is chemically altered by the addition of a methyl group (a carbon atom and three hydrogens) to genetic letter C. Epigenesis is yet another way of regulating transcription (the methylation stops this happening).
At the same time, the lute itself was altered by the addition of bass strings, or diapasons, which required the enlargement of the neck and head of the instrument.
Lactic acid final concentration and sucrose consumption were not altered by the addition of this phospholipid.
Product concentrations were notably altered by the addition of all three redox dyes MV, NR, or safranin O (Table 1).
However, the signal was not altered by the addition of ligand up to 9.27 × 10−5 M.
The fact that the properties of the aggregate are different or are altered by the addition of ions has been well reported in the literature [21, 22].
Data indicate that the surface area and pore distributions were not significantly altered by the addition of molybdena (followed by calcination) to the calcined sulfated zirconia support.
In a study where ICP was altered by the addition or removal of CSF, nine of twelve patients showed no change in sinus pressure, despite the CSF pressure being raised by up to 75 mmHg.
In each simulation, the time delay function of TRAF1 and NF κB2 translation was altered by the addition or subtraction of 15 min on either side of nominal value, while keeping the translation rate the same in each simulation.
However, the recording of SUV or MTV would not have been altered by the addition or absence of the CT component.
Says Prins, "Our evidence shows that in an animal model, some genes are altered by the addition or removal of methyl groups on the DNA, which changes the ability of those genes to be transcribed and translated to proteins.
