BIO152H5 Chapter Notes - Chapter all: Mate Choice, Punctuated Equilibrium, Ibm 7090

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Speciation the process by which one species splits into two or more species. Microevolution changes overtime in allele frequencies: mutations, natural selection, genetic drift, and gene flow. Macroevolution pattern of evolution above species level: for example, changes in the origin of groups of organisms, such as mammals or flowering plants. Speciation explains the unity and diversity of life. Concept 24. 1- the biological species concept emphasizes reproduction isolation: The (cid:449)ord spe(cid:272)ies is lati(cid:374) for (cid:862)ki(cid:374)d(cid:863) or (cid:862)appeara(cid:374)(cid:272)e(cid:863) Biologist compare morphology (body form) of different groups of organisms, physiology, biochemistry, and dna sequence: biological species concept, morphospecies concept, ecological species concept, phylogenetic species concept. These results confirm that morphologically distinct species are indeed discrete groups. Species is a group of populations whose members have potential to interbreed in nature and produce viable, fertile offspring: but do not produce viable, fertile offspring with members of other groups. These species are united by the reproductive compatibility (potentially)

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