After the end of the last ice age 10,000 years ago, populations of marine stickleback fish became stranded in freshwater lakes dotted throughout the Northern Hemisphere in places of natural beauty like Alaska and British Columbia. These little fish have adapted and thrive, living permanently in a freshwater environment drastically different than the ocean. Stickleback bodies have undergone a dramatic transformation, some populations completely losing long projecting body spines that defend them from large predators. Various scientists, including David Kingsley and Michael Bell, have studied living populations of threespine sticklebacks, identified key genes and genetic switches in the evolution of body transformation, and even documented the evolutionary change over thousands of years by studying a remarkable fossil record from the site of an ancient lake ten million years ago.
The Making Of The Fittest: Natural Selection and Adaptation
The Making Of The Fittest: The Birth And Death Of Genes
The Making of the Fittest: Natural Selection in Humans
The Making Of The Fittest: Evolving Switches, Evolving Bodies
The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture
The Making of the Fittest: Natural Selection and Adaptation (Spanish)
The Making of the Fittest: Natural Selection in Humans (Spanish)