It is thouroughly supressed by most (isn't it?) that random change in sex cells would, if there weren't any connection between them and something in the other cells, have to be totally pathetic as an evolutionary thing, since even fatal changes would be present in next generation, rather than revieled emidiatly. Therefore, this would make sexual reproduction rediculous. Still we prevail and develop. How has our evolution been letting us into the atomic age, adapting so fast (in an evolutionary sense) from some monkeylike creatures into a very new age. How would even that work, if our reproduction was not well connected to environmental change?!!