This printable crossword puzzle has 20 clues. Answers range from 5 to 19 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Inherited trait that is selected for over time because it allows organisms to better survive in their environment.
A fossil can be preserved in this substance
Ecological relationship in which two organisms attempt to obtain the same resource
Any preserved evidence of life from the past that contributes to the idea of evolution
The change in the DNA sequence
The body part that is similar in structure on different organisms but perform different structures
A mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals
A mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals
A group of organisms so similar to one another that they can breed and produce fertile offspring.
The product or result of something
Additional products
The differences in physical traits of an individual from the group to which belongs
Remnants of an organ or structure that functioned in an earlier ancestor
To disguise
Any of the alternative forms of a gene that occurs at a specific place on the chromosome
The collection of alleles found in all of the individuals of a population
Proportion of one allele, compared with all the alleles for that trait, in the gene pool
The condition of an allele or genotype in a gene pool where the frequency does not change from generation to generation
The process by which humans modify a species by breeding it for certain traits
The changes in genetic sequence of a specific species over generations