help with what? there is nothing to answer
Answer: Pulmonary aortic valve
Explanation:
Answer:
Invertebrates can have bilateral or radial symmetry, or they can be asymmetrical. Bilateral symmetry means that the animal is arranged in the same way on both sides. Radial symmetry means the body parts are arranged in a circle around a central point.
In drosophilia, the gene for eye color is located on the x chromosome.
