EXPRESSION OF HOXB-1 DURING GASTRULATION AND SEGMENTATION STAGES OF CARP (CYPRINUS CARPIO)

摘要: This report describes the cDNA sequence and embryonic RNA expression pattern of carp Hoxb-1. Carp Hoxb-1 is a labial-like, homeobox-containing gene 3' end Hox cluster. The in compared to that homologs other vertebrates. As holds for genes, expressed with highest intensity at sharp anterior boundary, fades out towards posterior. At later stages, gaps were found domain. from late gastrulation onwards, first mainly hypoblast but all germ layers. Its most prominent area rhombomere 4 (r4) hindbrain. Transcripts also neural tube, mesoderm (lateral, head presomite), epidermis crest. 30 hours post fertilization, was still r4, trunk tube branchial arches posterior r4. genes are thought be involved specification positional values along anterior-posterior axis, r4 supposed important specifying unique identity this hindbrain segment. conserved suggests true