Random Analogies
"The nucleolus is like the king in the game of chess In the zone, he sits on his thrown Where he produces little ribosomes" The link is a video that describes a cell, its parts and their function with a bit of rap.
"Our digestive system is like a chop shop, a black market garage where stolen cars are disassembled and turned into a few dozen carefully organized piles of parts. A few generations ago our chop shops handled only Chevrolets, Ford, and General Motors. The disassembly went smoothly because the vehicles all had similar layouts and everything was measured in inches and feet, no need for metric tools here. "
"Ban the clones ? Does all this mean that the possibility of human cloning should be joyously embraced ? Far from it . It would be suicidal , not just dispiriting , for the species to give up sexual reproduction in favour of cloning . Sex creates new gene combinations that confer new strengths , especially resistance to disease . As a distinguished biologist , George C. Williams , put it many years ago , asexual reproduction is like xeroxing your lottery ticket ; even if you have the winning number , making many copies wo not help unless the winning number is the same every time . In the history of evolution asexual lineages of species have often appeared but few have lasted long."
