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.
Redback spiders have quite good eyesight thanks to large eyes, as seen on this photo. This female tries to protect her nest from an intruder with a camera. Female redback spider in the nest showing off her red back. The nest contains a few hundred eggs and is about 12 mm (1/2) in diameter.