Tubulin may assemble and disassemble simultaneously in a process known as Tubulin may assemble and disassemble simultaneously in a process known as dynamic instability. treadmilling. microtubule organizing. MAP motoring. actin-regulated assembly.

Treadmilling.

Explanation:

Treadmilling is the phenomenon which involves the addition of sub-units to one (in the plus) end of an micro-tubule and loss of sub-units from the other (in the minus) end.

While Dynamic instability is defined by gain and loss of sub-units at the same end (either plus or minus) of an micro-tubule during growth and shortening.

So the tubulin may assemble and disassemble and this process is known as treadmilling.