Answer:
organizer
Step-by-step explanation:
Organizers are group of cells that have the ability to give instructions to fates and morphogenesis in the neighboring cells, and also speed their development into a particular organs and tissues.
Organizers is a particular region in the gastrulating embryo that brings about the induction of the body axis.
It can be observed that cells were brought into and out of the chick organizer through cell movement during gastrulation.the cellular makeup of an organizer is constantly changing, which can be linked to the process known as organizer regeneration.