AP BIOLOGY

Detailed explanation-1: -One example of disruptive selection is dark and light-colored oysters. Both dark-colored oysters and light-colored oysters have camouflage advantages. Light-colored oysters will blend with the rocks and dark-colored oysters can hide under the rock shadow.

Detailed explanation-2: -A more classic example of disruptive selection is the beak size of finches on the Galapagos Islands that was studied by Darwin. Because the majority of seeds found on some of the islands were either large or small, finches with large and small beaks (no medium-sized beaks) were favored on those islands.

Detailed explanation-3: -Finches on Santa Cruz Island On Santa Cruz Island, disruptive selection was seen causing speciation in the population of finches that resides there. Due to forces of disruptive selection, intermediate beak sizes have been selected against for generations. The resulting population has almost no medium sized beaks.

Detailed explanation-4: -Disruptive selection, also known as diversifying selection, describes population genetic changes that favor extreme values of a trait over intermediate values.