What is the name of the process that occurs in the core of the sun producing the light and heat
energy for life as we know it on planet Earth?

For example, hydrogen atoms are fused together to form helium. In the process, an immense amount of heat and energy is released. Much of that energy is on the electromagnetic spectrum that we cannot see (eg: ultraviolet light), but the visible portion of the spectrum is what we can see and that produces the yellow glow of the sun.

b is dominant over the allele for the white fur.

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.