1 In the cytoplasm, the mitotic spindle, consisting of microtubules and other proteins, forms between the two pairs of centrioles as they migrate to opposite poles of the cell. 2  The nuclear envelope disappears at the end of prophase. 3  This signals the beginning of the substage called prometaphase.
  Percussion Family. The Timpani is struck by mallets ... any instrument that requires a percussive touch is a member of this family ...surprisingly enough, and a little â¦ known fact, the Piano is also a member of the Percussion Family ... a key must be struck to produce a tone!!5 people found this useful.he Timpani is struck by mallets ... any instrument that requires a percussive touch is a member of this family ...
The timpani is made up of several drums. The timpani is different than other drums because it has a definete pitch. 1st Feb, 1500. Snare Drum. The snare drum was modify and use for war by the Turks. Bongo drum. The bongo drum comes from cuba. The word bongo means twin drum. This drum can be traced back to Africa.