zooid

Phenotypic variance in zooidal skeletal morphology appears to be virtually a two-component system in Stylopoma, comprising environmental variation within colonies and additive genetic variation among colonies in local populations (within sites).

Cell proliferation dynamics of somatic and germline tissues during zooidal life span in the colonial tunicate Botryllus schlosseri.

The among-colony component of zooidal morphologic variance thus can be obtained by partitioning the variance of zooids within colonies from total phenotypic variance.

Buds and adult zooidal tissue from six different Diplosoma colonies were separated by manual dissection in RNase-free PBS, quick-frozen in Eppendorf tubes on dry ice and stored at -80 [degree]C.

What have traditionally been referred to as the carnose and stoloniferous ctenostome bryozoans may not be natural groupings, and the organization of families within superfamily assemblages often depends on the interpretation given to a few zooidal characters.