Turtle Trouble
Updated: 2/21/2021
Turtle Trouble

Storyboard Description

Science summative project on evolution and natural selection.

Storyboard Text

  • Overpopulation
  • Variation of Offsrping
  • Environmental Change
  • A turtle species with soft-shells reside at the bottom of a canyon. Over time they have begun to overpopulate as there are no threats to their survival.
  • Survival of the Fittest
  • Some of the turtle offspring are born with a mutated gene, which causes a defect in their proteins. It results in them having the hard-shelled trait and dark gray shells instead of having soft-shells like the rest of the species.
  • Differential Reproduction
  • Caused by abrupt large gusts of winds, once stable rocks begin to fall off of the top of the canyons, hurtling at the turtles who live at the canyon's base.
  • Changes in Gene Pool
  • The turtle species now compete for their survival against the falling rocks. The hard-shelled turtles have an advantage, as their shells protect them against the rocks. However, the soft-shelled turtles are at a disadvantage, as their shells aren't strong enough to protect them, and being hit by a rock kills them. Eventually, natural selection causes the soft-shelled turtles to die off.
  • As the hard-shelled turtles survive more they have more reproductive success. Their offspring inherit the hard-shell trait and the species begins to adapt and become mostly hard-shelled.
  • Over a few generations, the turtle species has evolved to become composed of mainly hard-shelled turtles. Soft-shell turtles still remain but are much less ubiquitous in the population than they once were.