genetically chromosomally normal fetetus is exposed to a tiny bit of plutonium that lodges in its braain, develongng brain, it can kill the cell that's gonna form the right half of the brain or the left arm. that's called teratogenesis, damage of a normal fetus, and that's what that drug thalidomide did when women took it for morning sickness and their babies were born with no arms or no legs. it does that. it also--plutonium in particular, which is highly mutagenic--lodges in the testicles. so it has a predilection for testicles, and it lodges nexext to the spermatogonia, the cells that form the sperm, the precursors, and it's an alpha emitter, highly mutageninic. so it can mutate genes in the spermrm to induce genetic mutations and genetic disease down the generations. now, there are two sorts of mutations, dominant-- so if you have a baby with a dominant mutation like brown eyes, the baby will have brown eyes, or dwarfism-- achondroplastic dwarfism is domominant--but most mutations e recessive like blue eyes. you have to have two genes to have blue eyes. because if you have a brown-ey