What type of connective tissue is found only in the umbilical cord?

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Dna replication or repair occurs in a cell in all of thw following situations except when

What is gene expression control that occurs after the generation of rna