The phrase "will only be functional" is grammatically correct and can be used in written English.
It is typically used to describe something that will only work or be effective in a specific situation or under certain conditions. Example: The new software will only be functional on computers running Windows 10.
Due to the low conservation within this family, assigning functions to these proteins and confirmation that they indeed are germinal center kinases will only be possible after functional characterization.
The specific role that expansins play in the host parasite interaction will only be uncovered through detailed functional analysis.
The first line of defence against runaway editing may be simple selection during founder events such as transmission between hosts: infection will only be established if a functional polyprotein can be translated from the input genome(s).
These cell lines will only be used for direct functional assessment of the participants' genetic variants or where the specific inherited kidney disease's pathobiology is unknown or incompletely understood.
These challenges will only be achieved through combined efforts of functional genomics, epigenomics, and bioinformatics.
Immunotherapy of tumours by induction of tumour-specific cytotoxic T-lymphocytes (CTLs) will only be effective for tumours with a functional antigen processing and presentation machinery.
In female mice and cell lines with only one functional copy of Xist, XCI will only be initiated on the wild type X chromosome.
Still, it will only be voluntary and it will also allow a couple of loopholes (like withholding the chemical makeup of fragrances, dyes and preservatives and omitting ingredients that are "incidental" and not functional to the product).
Clearly some things will only ever be functional or decorative and yet still be vital in your life.
"DOES IT LOOK LIKE A BUM? INCIDENTALLY, HOW IS IT EVEN REMOTELY SEXY TO COMPARE A CANYON TO A BUM?" And from that point onwards you'll only be able to communicate in functional, resentful text messages about needing more bin bags.
