Unformatted text preview: ifference between intrasexual & intersexual selection? 17. Through what mechanisms is genotypic variation preserved in a population? What is balancing selection? 18. Can a population of organisms evolve any type of trait? Why or why not? Does evolution form “perfect” organisms? Why or why not? CH24: Origin of Species and CH 25: History of Life on Earth 19. What is a biological species? What is the basic process of speciation in sexually reproducing populations? What is meant by reproductive isolation? 20. List and describe the pre‐...
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- Spring '08
- Darwin, Natural history, Sympatric speciation, Sadava text Ch, homologous features