This printable crossword puzzle on the topic of Ecology & Evolution has 20 clues. Answers range from 7 to 21 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
A heritable change in the characteristics within a population from one generation to the next
Organisms that are best adapted to an environment, survive and reproduce more than others
The selective breeding of organisms (by humans) for specific desirable purposes
The process of becoming adapted to an environment, a trait that improves organism's ability to reproduce and survive
Trace/ remains of organisms that lived long ago
The ability to survive and reproduce
An evolutionary pattern in which many species evolve from a single ancestral species
The process by which unrelated species become more similar as they adapt to the same kind of environment
The random change in allele frequency in a population
The inability of members of a population to successfully interbreed with members of another population of the same or related species
Physical separation of populations due to geographic barriers that prevent interbreeding
Defense in which one organism resembles another that is dangerous
Adaptation that allows animals to blend in with certain aspects of their environment
Anatomical structure in one species that is similar in function and appearance, but not in evolutionary origin
Leftover traces of evolution that serve no purpose
Anatomical structures in one species that compared other anatomical structures in another species, originated from a single anatomical structure in a common ancestor of the two species
Father of evolution, proposed natural selection
Proposed inheritance of acquired characteristics and the law of use and disuse
Thought that population grew geometrically, food grown arithmetically
Theory of gradualism