Natural Selection

1234567
Across
  1. 3. A heritable trait or behavior that improves an organism's chance of survival and reproduction in its environment.
  2. 4. A random change in DNA that can introduce new traits into a population.
  3. 6. The measure of an organism’s ability to survive and produce viable offspring in a given environment.
  4. 7. The formation of new and distinct species through evolution.
Down
  1. 1. The gradual change in the heritable characteristics of a population over successive generations.
  2. 2. Genetic differences between individuals in a population, which are essential for selection to occur.
  3. 5. the new, young organisms produced by one or more parent organisms through the process of reproduction.