Hows does evolution take place? I understand that its an accumulation of changes to adapt to an environment, but how does it change generation to generation? Is the set of traits that will be passed down to an offspring predetermined or does it change depending on how my environment is? Its seems too fascinating that my environment may change the set of dna that is passed down, or is that not the case?
In: Biology
A bug has a hundred children. Some have thicker skeletons, some have thinner skeletons. The ones with thicker skeletons are slower, so they are much more likely to get fly-swatted by angry humans.
So now the thicker-skeletoned bugs are dead and the thinner-skeletoned bugs are alive. They then have whole families themselves, and on average their children will also have thinner skeletons. This repeats generation after generation, with the more successful genes being passed along while the less successful genes die with their host.
Latest Answers