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.
Horseshoe crabs have two primary compound eyes and seven secondary simple eyes. Two of the secondary eyes are on the underside. Most arthropods have at least one of two types of eye: lateral compound eyes, and smaller median ocelli, which are simple eyes.When both are present, the two eye types are used in concert because each has its own advantage.hile most crustacean and insect larvae possess only simple median eyes, including the Bolwig's organ pit-eye of Drosophila and the naupliar eye of most crustaceans, several groups have larvae with compound lateral eyes. The compound eyes of adults develop in a separate region of the head from the larval median eye.