When a check is made out to two individuals and there is no and, and there is no or behind any of the names, can the check be endorsed by just one of the names on the check?

If an instrument is payable to two or more persons alternatively, it is payable to any of them and may be negotiated, discharged, or enforced by any or all of them in possession of the instrument. If an instrument is payable to two or more persons not alternatively, it is payable to all of them and may be negotiated, discharged, or enforced only by all of them. If an instrument payable to two or more persons is ambiguous as to whether it is payable to the persons alternatively, the instrument is payable to the persons alternatively.

OR - Either payee can indorse to negotiate
AND or & - All payees must indorse to negotiate
AND/OR, /, OR NOTHING AT ALL - See OR