Evolution and Taxonomy Crossword
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
 
 
Down: 2) process of breeding organisms with specific traits in order to produce offspring with identical traits3) taxonomic grouping of similar orders4) a structure in a present-day organism that no longer serves its natural purpose, but was probably useful to an ancestor; provides evidence of evolution6) structures that do not have a common evolutionary origin but are similar in function7) idea that periods of speciation occur relatively quickly with long periods of genetic equilibrium in between.9) occurs whenever a physical barrier divides a population, which results in individuals no longer being able to mate; can lead to the formation of a new species10) two-word system developed by Carolus Linnaeus to name species13) percentage of any specific allele in a population's gene pool.14) natural selection that favors one of the extreme variations of a trait; can lead to rapid evolution in a population17) divergent evolution in which ancestral species evolve into an array of species to fit a number of diverse habitats.20) the second word of a species name27) process of evolution of new species that occurs when members of similar populations no longer interbreed to produce fertile offspring within their natural environment.30) first word of a two-part scientific name used to identify a group of similar species. Across: 1) group of prokaryotes with strong cell walls and a variety of structures, may be autotrophs or heterotrophs5) biological classification system based on phylogeny; assumes that as groups of organisms diverge and evolve from a common ancestral group, they retain derived traits.8) evolutionary history of a species based on comparative relationships of structures and comparisons of modern life forms with fossils.11) branch of biology that groups and names organisms based on studies of their shared characteristics12) natural selection that favors individuals with either extreme of a trait; tends to eliminate intermediate phenotypes15) branching diagram that models the phylogeny of a species based on the derived traits of a group of organisms16) group of unicellular or multicellular heterotrophic eukaryotes that do not move from place to place; absorb nutrients from organic materials in the environment.18) taxonomic grouping of similar classes.19) occurs when formerly interbreeding organisms can no longer produce fertile offspring due to an incompatibility of their genetic material or by differences in mating behavior21) taxonomic grouping of similar classes; term used instead of phyla by plant taxonomists22) structural adaptation that enables one spieces to resemble another species; may provide protection from predators or other advantages23) natural selection that favors average individuals in a population; results in a decline in population variation24) taxonomic grouping of similar families25) any species with multiple sets of the normal set of chromosomes; results from errors during mitosis and meiosis26) diverse group of multicellular or unicellular eukaryotes that lack complex organ systems and live in moist environments; may be autotrophic or heterotrophic.28) evolution in which species that once were similar to an ancestral species diverge; occurs when populations change as they adapt to different environmental conditions29) evolution in which distantly related organisms evolve similar traits; occurs when unrelated species occupy similar environments31) condition in which the frequency of alleles in a population remains the same over generations32) all of the alleles in a population's genes.33) idea that species originate through a gradual change of adaptations34) earliest stage of growth and development of both plants and animals; differences and similarities among embryos can provide evidence of evolution35) grouping of objects or information based on similarities
 

 

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