Biology Crossword
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
                              
 
 
Down: 1) two or more species reproduce at different times2) two populations develop differences that prevent them from breeding3) one species copying another species5) structure that is inherited from ancestors but has lost much or all of its original function8) blending in with the environment9) process by which organisms that are best suited to their environment survive and reproduce more successfully 10) a change in allele frequency causing a dramatic reduction in the size of a population11) change in allele frequencies as a result of the migration of a small subgroup of a population Across: 4) the passage and establishment of genes typical of one breeding population into the gene pool of another 6) body parts that share a common function, the do not structure7) two populations are separated by rivers, bodies of water, mountains, etc.12) structures that are similar in different species of common ancestry13) random change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population
 

 

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