Sponges have specialized cells and an endoskeleton, but they lack tissues and body symmetry. ... They include jellyfish and corals, both of which have radial symmetry. All cnidarians have nematocysts, and many are bioluminescent. They may exist in medusa and/or polyp form.
This can happen because you have recessive and dominant characteristics passed down. So you can get a totally different chromosome that doesn't come from your parents because your grandparents may have had it or great grand parents, the line keeps going .
<u><em>If wrinkled seeds are dominant, it is a 75% chance, if round seeds are dominant, it is a 25% chance. In this case it's probably 25%, considering round seeds are emphasized.</em></u>
