Interest and anticipation builds to a fevered pitch leading up to the Oscar telecast in February, when hundreds of millions of movie lovers tune in to watch the glamorous ceremony and learn who will receive the highest honors in filmmaking. For a complete list of winners for the 89th Oscars, click here.
Darwin and Wallace develop similar theory. Darwin began formulating his theory of natural selection in the late 1830s but he went on working quietly on it for twenty years. He wanted to amass a wealth of evidence before publicly presenting his idea.
Describe the theory of evolution by natural selection. Natural selection occurs when environmental conditions select for certain advantageous traits. Because traits are heritable, the traits of those who successfully reproduced are more common in the next generation. And in this way, nature selects for these traits. Evolution by natural selection is thus the change in the frequency of different alleles for a trait through time. Over time, natural selection can allow species to adapt to changing environmental conditions and diverge from one another, leading to the great diversity of form and function of organisms we observe today.