• Every organism is different from every other organism.
  • Every organism's genes are different, too.
  • Mutations are natural.
  • Some are harmful, but many are neutral.
  • If a mutation is harmful, the organism may not live to reproduce.
  • If the mutation is beneficial, that organism may have a better chance to survive.
  • An organism that survives is likely to have offspring.
  • If it does, it may pass the mutation on to its offspring.
  • Traits that help an organism survive become more common.
  • Over time, traits that hinder survival eventually disappear.
Select from the frequently asked questions below