a: Pcr ~
b: a photocopier that makes photocopiers
What: PCR can selectively replicate DNA. It does this by making a copy of a DNA strand. 1 DNA-->2DNA; 2DNA-->4; 4DNA--> 8DNA; and so on. The photocopier analogy is close, but doesn't describe why the copying is so efficient. Each new DNA strand becomes a template for another new strand of DNA.
Where: Reference Link Has Evaporated
Date: May 13 2013 6:20 PM
# 3162 Critique Analogy