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 a total of 10 eyes used for finding mates and sensing light. The most obvious eyes are the 2 lateral compound eyes. These are used for finding mates during the spawning season. Each compound eye has about 1,000 receptors or ommatidia.