Index 



Abies, 190 



magnifica, 259 

 Acanihiza, 167 

 Acetylene, 45 

 Acheta, 119, 186 



Acquired characters, inheritance of, 2 

 Action of land bridges, 302 

 Adaptations, 114 



directional factors, 151 



stability in, 140 

 Adapted, 111 

 Adaptive change, 140 



radiation, 221, 341 

 Adenine, 38, 39 

 Aedes, 161, 240 

 Aegilops speltoides, 202 

 African migratory locust, 128, 130 

 Age and area theory, 320 

 Alanine, 34, 45, 52 

 Alleles, 63, 82 



AUocapnia, 247 



pijgmaea, 173 



sandersoni, 173 



vivipara, 105 

 Allochronic speciation, 186 

 Allometry, 64 



human, 64 

 Allopatric species, 166 

 Allopolyploids, 200, 335 

 Amaranthus, 195, 240 

 American opossum, 98, 108 

 Amino acids, 33, 44, 45 



life of, 46 

 Amino group, 34 

 Ammonia, 16, 27, 45 

 Analogy and homology, 2 

 Andromeda nebula, 9 

 Andropogon, 281 

 Aneuploids, 73 



Poa, 74 

 Animal evolution, 74 

 Annelida, polyploidy, 199 



375 



