BIOL 1107 Lecture Notes - Lecture 17: Spermatophore, Hydrophile, Golgi Cell

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You will learn that animal structure is fundamentally related to function: * adaptations and fitness trade-offs: then asking: Animals are generally studied through the anatomy and physiology. Anatomy refers to an organism"s physical structure or form. Physiology is the study of how the physical structures in an organism function. An elephant"s large ears are loaded with blood vessels. Elephants shunt blood to the surface of their ears where body heat can be transferred to the environment. African elephants have ears two to three times as large as those of asian elephants. Biologists who study animal anatomy and physiology are studying adaptations. Heritable traits that make individuals more likely to survive and reproduce in a certain environment better than individuals that lack those traits. Adaptation results from evolution by natural selection. Elephants with alleles for larger ears have a better chance to survive and produce more offspring than elephants with alleles for smaller ears.

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