Specialized cell junctions<span> occur at points of cell-cell and cell-matrix contact in all tissues.</span>
Will take place in the nucleus where the DNA is located
Yes, you are doing this correct.
The correct answer is absence of jaws.
Lampreys and hagfish are in the class Agnatha, they are jaw-less fish. The members of the agantha class are probably the earliest vertebrates. Scientists have found fossils of agnathan species from the late Cambrian period that occurred 500 million years ago.
