Natural Selection
Updated: 3/1/2021
Natural Selection

Storyboard Text

  • #1 Overproduction
  • #2 Variation
  • #3 Environment
  • A dolphin with the recessive variation of a shorter snout reproduces with a dolphin with the dominant trait of a long snout. Their offspring has a long snout.
  • #4 Struggle
  • A dolphin with the recessive variation of a shorter snout reproduces with a dolphin with the dominant trait of a long snout. Their offspring has a long snout.
  • #5 Selection
  • Since there are more long snouted dolphins in the area, the area where the Orca whales are more likely to eat them.
  • #6 Differential Reproduction
  • The Orca whales end up eating more long snout dolphins than short snout dolphins. Short snout dolphins start to appear more.
  • Short snout dolphins reproduce with other short snout dolphins. More short snout dolphins start to show but the long snout is the dominant trait so whenever a long snout dolphin reproduces, it makes more long snout offspring.
  • The short snout dolphins thrive because there is less of the long snout the dominants trait which leaves them to reproduce although they still have the long snout allele in their genes.