somatic effects, radiation effects such as cancer that occur in the exposed individual, as opposed to genetic effects, which occur in the individual's offspring.omatic effects, radiation effects such as cancer that occur in the exposed individual, as opposed to genetic effects, which occur in the individual's offspring.
It varies from spider to spider. Most have eight - four main ones  and 4 small back ones.   It depends. some have 4 some have 2.   It varies by species, but usually tâ¦hey have 6 or 8 eyes.   some have 8, some have 6 8.
3 Their Brains Are Huge. Regardless of their individual size, all spiders make intricate webs. At first, that might seem like a âwell duhâ momentâwebs are just one of those spider things that spiders do. But this ability takes up a lot of brain space, especially when you compare that required space to the spiderâs size.