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Page xxiii
... Speciation 465 Allopatric Speciation 465 Parapatric Speciation 468 Sympatric Speciation 470 Genetic Mechanisms of Speciation 472 Speciation by Divergence 472 Speciation by Peak Shifts 473 How Much Genetic Change is Required for Speciation ...
... Speciation 465 Allopatric Speciation 465 Parapatric Speciation 468 Sympatric Speciation 470 Genetic Mechanisms of Speciation 472 Speciation by Divergence 472 Speciation by Peak Shifts 473 How Much Genetic Change is Required for Speciation ...
Page 470
... speciation is possible , but no case of speciation by this mode can be cited without reservation . If closely related species are presently parapatric , we cannot be certain that they were in contact during speciation . Parapatric ...
... speciation is possible , but no case of speciation by this mode can be cited without reservation . If closely related species are presently parapatric , we cannot be certain that they were in contact during speciation . Parapatric ...
Page 472
... SPECIATION Classifying speciation modes as allopatric , parapatric , or sympatric accentuates the biogeographical factors of speciation but does not emphasize the actual genetic mechanisms that lead to reproductive barriers between ...
... SPECIATION Classifying speciation modes as allopatric , parapatric , or sympatric accentuates the biogeographical factors of speciation but does not emphasize the actual genetic mechanisms that lead to reproductive barriers between ...
Contents
Themes in the Study of Life | 1 |
UNIT ONE The Chemistry of Life | 15 |
Atoms Molecules and Chemical Bonds | 20 |
Copyright | |
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active adaptive algae allele amino acids animals asexual atoms bacteria biology called Calvin cycle carbon cell walls cellular Chapter chemical chlorophyll chloroplasts chromosome complex covalent cycle cytoplasm diploid disease diversity electron transport chain embryo energy environment enzymes eukaryotic eukaryotic cells evolution evolutionary evolved example fertilization Figure flowers fossil function fungi gametes gametophyte gene pool genetic genome genotype glucose glycolysis haploid human hydrogen bonds inherited ions living meiosis metabolic microscope microtubules minerals mitochondria mitosis molecular mRNA multicellular mutations natural selection nitrogen nucleotide nucleus nutrients occurs organelles organic molecules oxidized oxygen pair pathway phage phenotype phosphate photosynthesis phylum plant cells plasma membrane polypeptide population produce prokaryotes protein protists proton reaction recombinant replication reproduction respiration ribosomes root seed sequence sexual soil solution speciation species sperm strand structure sugar synthesis tion tissue traits vascular vertebrates viruses xylem zygote