One from of a gene i took the test its right
Answer:
Chordates share some common traits. At some point in their life cycle, they have a notochord, a nerve cord, and pharyngeal (fayr uhn JEE uhl) slits in the neck or throat. The notochord is a flexible rod that supports the animal's back. ... Sharks are one type of vertebrate animal that have backbones made of cartilage.
They breathe through their lungs while moving their throat or rib cage. Some reptiles can hold their breath for hours by simply not moving.
In the nucleus, the part on the cell that contains all the genome
