Convergent / Divergent Evolution

The three species pictured do not share a common ancestor, yet have evolved to have a similar anatomy and life style. This is an example of ?

• Homologous Structures

• Divergent Evolution

• Vestigial Organs

• Convergent Evolution

The three species pictured share a common ancestor and have adapted so that each lives in a different environment. This is an example of

• Law of Superposition

• Evolutionary Arms Race

• Divergent Evolution

• Convergent Evolution

Tags

NGSS.MS-LS4-2

• Co-evolution

• Divergent Evoltuion

• Convergent Evolution

• Co-evolution

• Divergent Evolution

• Convergent Evolution

The Rough-skinned newt produces a potent neurotoxin that concentrates in their skin. Garter snakes, have evolved resistance to this toxin through a series of genetic mutations, and prey upon the newts. The relationship between these animals has resulted in an evolutionary arms race that has driven toxin levels in the newt to extreme levels.

• Co-evolution

• Divergent Evolution

• Convergent Evolution

What type of evolution is described in the following scenario: King Snakes are a family of snakes that usually eat other snakes in the wild. Even though many of the snakes they eat are very poisonous, King Snakes have adapted the ability to not be affected by their poisons. In response, some of these poisonous snakes, like rattlesnakes, have adapted other defensive behaviors (other than biting) to try and “scare off” the King Snakes.

• Coevolution

• Divergent Evolution

• Convergent Evolution

What type of evolution is described in the following scenario: The flowers that bloom from the saguaro cactus have evolved a bright, white coloration to attract many of the bats they rely on to pollinate their flowers. Since they rely on the bats, they have also adapted to opening their flowers at night, when the bats are active. The bats have also adapted to the cactus by a.) developing the ability to hover above the flowers, and b.) developing a long tongue that can reach deep inside the flower.

• Coevolution

• Divergent Evolution

• Convergent Evolution

What type of evolution is described in the following scenario: Chameleons, a type of lizard (reptile), have two eyes they can move in completely different directions, so they can see all the way around themselves. Sand lances are a type of fish that can also move their eyes like the chameleon, even though they are not related to one another.

• Coevolution

• Divergent Evolution

• Convergent Evolution

What type of evolution is described in the following scenario: In the ocean surrounding Antarctica, there are fish that survive the cold water by using a molecule made of glycoproteins that circulates the blood and keeps it from freezing. Certain kinds of worms that live in the Arctic ocean also make antifreeze proteins that help them live in icy water

• Coevolution

• Divergent Evolution

• Convergent Evolution

What type of evolution is described in the following scenario: A kit fox lives in the desert and has large ears with greater surface area that keep the fox from getting overheated. The red fox lives in the forest and has a red coat that keeps it camouflaged.

• Coevolution

• Divergent Evolution

• Convergent Evolution