At the end of the cycle, zooids die in a process called takeover, during which all their tissues undergo apoptosis and are resorbed by phagocytic cells in the blood, after which the new bud or buds complete development and become the adult zooids, and the process starts anew.
In fact, the resorbed partner is often the only genotype found in the germline (Sabbadin and Zaniolo, 1979; Pancer et al., 1995; Stoner and Weissman, 1996; Stoner et al., 1999).
Resorptions of juveniles in trichimeric fusions were characterized by the number of individuals resorbed (zero, one, or two) and the position of the resorbed individuals (position 1, 2, or 3).
Table 4 Chi-square goodness of fit table for linear fusions with two resorbed individuals Position 1 2 3 Total OBSERVED Resorbed 35 17 30 82 Not Resorbed 6 24 11 41 TOTAL 41 41 41 123 EXPECTED Resorbed 27.3 27.3 27.3 Not Resorbed 13.7 13.7 13.7 Number of resorbed specimens observed in each location is reported.
including the genotype (1 = un-fused, 2 = bichimera, 3 = trichimera); the age (days from hatch) of the specimen when isolated; which and how many of the individuals within a chimera were resorbed (NA = not applicable for the individuals, L = left, R = right [bichimeras], 1 = left.
Would it continue to grow, maintain the right shape and size, allow the scaffold to resorb? Would it be a meniscus?
The scaffolds allowed new cells to develop, with a blood supply and new collagen, and were resorbed. The regenerated cartilage looked like a normal meniscus.