Lamarck's theory states that use or disuse of any organs causes change of that organ. And it is transmitted to the next generation.... the main eg is about the giraffes... and the science says this theory is wrong..
my doubt is that giraffes and humans have the same no. of neck bones. won't their be something right in this theory ...
yeah,... there will be something right in that theory ..they are not saying that theory is fully wrong ... as it has got a main draw back that the changes won't occur in the next generation unless a chnge occur in the germ cells or in gene. (just my view :p ) .