SUMMARY The molecular mechanisms underlying the formation and patterning of the nervous system are relatively poorly understood for lophotrochozoans (like annelids) as compared with ecdysozoans (especially Drosophila ) and deuterostomes (especially vertebrates). Therefore, we have undertaken a ...
Distinguish between a flatworm, a roundworm and an annelid worm. Identify and discuss two key features that could be used to distinguish them. Compare and contrast the amphibian and reptile classes by discussing three key similarities and differences. Name one phylum with two ge...
In addition to helminths, other animal lineages such as mollusks (freshwater snails, mussels and oysters) and annelids (lugworms), were found to synthesize RQ [21]. Download: Download high-res image (269KB) Download: Download full-size image Fig. 2. Phylogenetic distribution of RQ. Lineages...
Annelids such as earthworms can reject both allografts and xenografts. The rejection of xenografts (from other species of earthworms) takes about 20 days. Cells invade the graft, and the grafted tissue turns white, swells, becomes edematous, and eventually dies. If the recipient worms are grafted...