| M M M M M | letter |
| M phase | chapter 12 | bio 113 | heading |
| Macroevolution | chapter 25 | bio 114 | heading |
| Maintaining homeostasis | chapter 50 | bio 114 | heading |
| Malthus, Thomas | chapter 22 | bio 114 | heading |
| Maltose | chapter 5 | bio 113 | heading |
| Mammalia, class | chapter 34 | bio 114 | heading |
| Mapping, genetic | chapter 15 | bio 113 | heading |
| Marsupials | chapter 34 | bio 114 | heading |
| Mass extinction and adaptive radiation | chapter 25 | bio 114 | heading |
| Material, hereditary (prokaryotic) | chapter 27 | bio 114 | heading |
| Mating behavior | chapter 51 | bio 114 | heading |
| Mating systems | chapter 51 | bio 114 | heading |
| Mating, assortative | chapter 23 | bio 114 | heading |
| Mating, nonrandom | chapter 23 | bio 114 | heading |
| Mating, random | chapter 23 | bio 114 | heading |
| Matrix, extracellular | chapter 7 | bio 113 | heading |
| Maturation | chapter 51 | bio 114 | heading |
| Mechanical defenses | chapter 53 | bio 114 | heading |
| Mechanical isolation | chapter 24 | bio 114 | heading |
| Mechanistic basis of life | chapter 4 | bio 113 | heading |
| Megaspore | chapter 29 | bio 114 | heading |
| Meiosis | chapter 13 | bio 113 | heading |
| Meiosis and Sexual Life Cycles | chapter 13 | bio 113 | chapter title |
| Meiosis I | chapter 13 | bio 113 | heading |
| Meiosis II | chapter 13 | bio 113 | heading |
| Meiosis in detail | chapter 13 | bio 113 | heading |
| Membrane | chapter 8 | bio 113 | heading |
| Membrane asymetry | chapter 8 | bio 113 | heading |
| Membrane leaflet | chapter 8 | bio 113 | term |
| Membrane potential | chapter 8 | bio 113 | heading |
| Membrane proteins | chapter 8 | bio 113 | heading |
| Membrane proteins, fluidity | chapter 8 | bio 113 | heading |
| Membrane proteins, functions | chapter 8 | bio 113 | heading |
| Membrane proteins, integral | chapter 8 | bio 113 | heading |
| Membrane proteins, peripheral | chapter 8 | bio 113 | heading |
| Membrane Struction and Function | chapter 8 | bio 113 | chapter title |
| Membrane, nuclear | chapter 7 | bio 113 | heading |
| Membrane, plasma | chapter 7 | bio 113 | heading |
| Membrane-bound organelle | chapter 7 | bio 113 | heading |
| Membrane-protein, lumen protein, and secreted protein synthesis | chapter 7 | bio 113 | heading |
| Membranes, transport across | chapter 8 | bio 113 | term |
| Mendel and the Gene Idea | chapter 14 | bio 113 | chapter title |
| Mendel's law of segregation | chapter 14 | bio 113 | heading |
| Messenger RNA | chapter 17 | bio 113 | heading |
| Messengers, second | chapter 11 | bio 113 | heading |
| Metabolic pathways, evolution of | chapter 27 | bio 114 | heading |
| Metabolic water | chapter 9 | bio 113 | heading |
| Metabolism | chapter 2 | bio 113 | heading |
| Metabolism | chapter 6 | bio 113 | heading |
| Metabolism, Archaebacteria | chapter 27 | bio 114 | heading |
| Metabolism, nitrogen | chapter 27 | bio 114 | heading |
| Metamorphosis | chapter 33 | bio 114 | heading |
| Metaphase | chapter 12 | bio 113 | heading |
| Metaphase I | chapter 13 | bio 113 | heading |
| Metaphase plate | chapter 12 | bio 113 | heading |
| Methionine | chapter 17 | bio 113 | heading |
| Methylation | chapter 19 | bio 113 | heading |
| Microbial disease | chapter 27 | bio 114 | heading |
| Microbial Models: The Genetics of Viruses and Bacteria | chapter 18 | bio 113 | chapter title |
| Microevolution | chapter 23 | bio 114 | heading |
| Microfilaments | chapter 7 | bio 113 | heading |
| Microorganisms, relevance | chapter 18 | bio 113 | heading |
| Microorganisms, types of | chapter 18 | bio 113 | heading |
| Microspore | chapter 29 | bio 114 | heading |
| Microtubule, mitotic, nomenclature | chapter 12 | bio 113 | heading |
| Microtubules | chapter 7 | bio 113 | heading |
| Microtubules, kinetochore | chapter 12 | bio 113 | heading |
| Microtubules, nonkinetichore | chapter 12 | bio 113 | heading |
| Migration | chapter 23 | bio 114 | heading |
| Migration | chapter 51 | bio 114 | heading |
| Mimicry, Batesian | chapter 53 | bio 114 | heading |
| Mimicry, Mullerian | chapter 53 | bio 114 | heading |
| Missense mutation | chapter 17 | bio 113 | heading |
| Mitochondria | chapter 7 | bio 113 | heading |
| Mitochondria | chapter 10 | bio 113 | heading |
| Mitochondrion | chapter 9 | bio 113 | heading |
| Mitosis | chapter 12 | bio 113 | heading |
| Mitosis and multicellularity | chapter 12 | bio 113 | heading |
| Mitotic microtubule nomenclature | chapter 12 | bio 113 | heading |
| Mitotic spindle | chapter 12 | bio 113 | heading |
| Model organisms | chapter 21 | bio 113 | heading |
| Model organisms for the study of development | chapter 21 | bio 113 | heading |
| Modern fish | chapter 34 | bio 114 | heading |
| Modern synthesis | chapter 23 | bio 114 | heading |
| Modes of natural selection | chapter 23 | bio 114 | heading |
| Modification, descent with | chapter 22 | bio 114 | heading |
| Molds | chapter 31 | bio 114 | heading |
| Molecular Basis of Inheritance, The | chapter 16 | bio 113 | chapter title |
| Molecular biology | chapter 20 | bio 113 | heading |
| Molecular evolution | chapter 22 | bio 114 | heading |
| Molecular genetics | chapter 18 | bio 113 | heading |
| Molecular genetics, central dogma of | chapter 5 | bio 113 | heading |
| Molecular recombination | chapter 15 | bio 113 | heading |
| Molecular systematics | chapter 25 | bio 114 | heading |
| Molecular techniques | chapter 20 | bio 113 | heading |
| Mollusca, phylum | chapter 33 | bio 114 | heading |
| Monogamous | chapter 51 | bio 114 | heading |
| Monohybrid cross | chapter 14 | bio 113 | heading |
| Monomer | chapter 5 | bio 113 | heading |
| Monophosphate, adenosine | chapter 6 | bio 113 | term |
| Monophyletic domain = Eukaryotes | chapter 28 | bio 114 | heading |
| Monophyletic taxon | chapter 25 | bio 114 | heading |
| Monosaccharides | chapter 5 | bio 113 | heading |
| monosomic | chapter 15 | bio 113 | heading |
| Monosomy | chapter 15 | bio 113 | heading |
| Monotremes | chapter 34 | bio 114 | heading |
| Morphogenesis | chapter 21 | bio 113 | heading |
| Morphological diversity, prokaryotic | chapter 27 | bio 114 | heading |
| Morphologically defined species | chapter 24 | bio 114 | heading |
| Moss, life cycle of | chapter 29 | bio 114 | heading |
| Motility | chapter 27 | bio 114 | heading |
| Moving and timing behaviors | chapter 51 | bio 114 | heading |
| mRNA | chapter 17 | bio 113 | heading |
| mRNA activation/inactivation | chapter 19 | bio 113 | heading |
| mRNA degradation | chapter 19 | bio 113 | heading |
| mRNA processing | chapter 17 | bio 113 | heading |
| mRNA, codons are a property of | chapter 17 | bio 113 | heading |
| Mullerian mimicry | chapter 53 | bio 114 | heading |
| Multicellularity and mitosis | chapter 12 | bio 113 | heading |
| Multiple alleles | chapter 14 | bio 113 | heading |
| Multiplication, law of | chapter 14 | bio 114 | heading |
| Muscular, postanal tail | chapter 34 | bio 114 | heading |
| Mutation | chapter 17 | bio 113 | heading |
| Mutation | chapter 23 | bio 114 | heading |
| Mutation (. . . and yet the only way to change) | chapter 17 | bio 113 | heading |
| Mutation (typically detrimental . . .) | chapter 17 | bio 113 | heading |
| Mutation, bacteria | chapter 18 | bio 113 | heading |
| Mutation, frameshift | chapter 17 | bio 113 | heading |
| Mutation, missense | chapter 17 | bio 113 | heading |
| Mutation, nonsense | chapter 17 | bio 113 | heading |
| Mutation, point | chapter 17 | bio 113 | heading |
| Mutation, silent | chapter 17 | bio 113 | heading |
| Mutualism | chapter 27 | bio 114 | heading |
| Mutualism | chapter 53 | bio 114 | heading |
| Mycelium | chapter 31 | bio 114 | heading |
| Mycorrhizae | chapter 31 | bio 114 | heading |
| Myosin | chapter 7 | bio 113 | term |
| Myxomycota | chapter 28 | bio 114 | heading |