This printable crossword puzzle on the topic of Ecology & Evolution has 15 clues. Answers range from 7 to 20 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
a process in which a single species evolves into many new species
when a new colony is created by a few members of the original population
a change in allele frequencies due to the movement of individuals in and out of a population
a change in allele frequencies in a small population
a sudden decrease in population and allele frequencies in a population due to density-independent factors
when extremes are considered most "fit"; average is "unfit:
the average traits are most "fit"; extremes are considered most "unfit"
one extreme trait is chosen
a group of similar organisms that can interbreed and produce fertile offspring
following a population or species over time
the adaptations that occur over time and create a new species
when there is a geographical barrier causing a new species to form
no geographic barrier, but speciation still occurs
"before zygote;" a new species will not form a zygote with the original species
zygote is formed, but something is wrong with the zygote (ex: offspring is sterile)