Biology 9th Edition by Eldra Solomon,Linda Berg ,Diana Martin

تمرين 4

EVOLUTION LINK. Darwin's theory of evolution by natural selection is based on four observations about the natural world. One of these is that each individual has a combination of traits that makes it uniquely different. Darwin recognized that much of this variation among individuals must be inherited, but he did not know about Mendel's mechanism of inheritance. Based on what you have learned in this chapter, briefly explain the variation among individuals that Darwin observed.