Natural Selection Project

Natural Selection Project
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  • Principle 2: Overproduction & the Struggle to Survive
  • Natural selection forces animals to mate with other animals with the best trait. This trait will then be passed down and will become more common in the population.
  • Focus Question: How does natural selection lead to adaptation in population?
  • Unit: Evolution
  • 
  • Principle 3: Survival and Reproduction of the Fittest
  • The strength in the forearms, abdominal, and paws helps the squirrel climb and jump, this lets them be stealthy, escape predators, and be able to get food from high up places quite easily.
  • Environment: Urban Organism: Squirrel Adaptation: Strength Adaptation type: Physical
  • Adaptation
  • MM
  • Some squirrels may have alleles that are coded for either weak muscles or strong muscles. In this case, the muscle strength gene for strong muscles is a dominant M while the weak muscles are a recessive m.
  • Principle 4: Changes in the Gene Pool
  • Principle 1: Genetic Variation
  • Muscle Strength Gene: M
  • Mm
  • mm
  • MM
  • Mm
  • Too many squirrels are produced and some have the gene for weak muscles and some have the gene for strong muscles. Predators go for the easy target which is the weak squirrels because they are slower, this causes the weak gene population to decrease.
  • mm
  • MM
  • MM
  • The strong squirrels will then reproduce with other strong squirrels so their genes can be passed on. Natural selection has selected the weak squirrels to decrease which leaves the strong population to thrive.
  • Mm
  • Mm
  • MM
  • MM
  • MM
  • MM
  • Over time, the majority, or maybe all, of the squirrel population in that habitat will have the strong muscle gene. The weak muscles gene may be present, but it will not be shown. This means that squirrels in that habitat will be able to climb and jump easily.
  • Mm
  • MM
  • MM
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