LAMARCK THEORYI'm Jean Baptiste Lamarck and in 1980 I published my theory about evolution, ussing jiraffes as a reference I will explain what this theory consits of.
The first giraffes had short necks so they had to stretch their necks to reach food in the tress.
This constant movement would have caused a lengthening of their necks and their necks and their descendants would have been born with the highest necks.
As the species changes the situation, its DNA transforms. Live evolves by trial and successively.
My name is Juancha, the giraffe, I had to adapt to the changes that ocurred in my habitat and I changed my genetics generation after generation.
Our neck gets so long, given the fact that in order to eat food we streched ourselves and as the generations passed, the new DNA saw the need to modify our neck