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Question
Animals who are native of colder regions have shorter ears. This is ............. law.
Animals who are native of colder regions have shorter ears. This is ............. law.
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Solution
The correct option is B Allen
Allen's rule is a biological rule posited by Joel Asaph Allen in 1877. The rule says that the body shapes and proportions of endotherms vary by climatic temperature by either minimizing exposed surface area to minimize heat loss in cold climates or maximizing exposed surface area to maximize heat loss in hot climates. The rule predicts that endotherms from hot climates usually have ears, tails, limbs, snouts, etc. that are long and thin, while equivalent animals from cold climates usually have shorter and thicker versions of those body parts. Thus, option A is correct.
Cope's rule, named after American paleontologist Edward Drinker Cope, postulates that population lineages tend to increase in body size over evolutionary time. Thus, option B is wrong.
Dollos law, biological principle, formulated about 1890 by Louis Dollo, a French-born Belgian paleontologist, that evolution is not reversible; i.e., structures or functions discarded during the course of evolution do not reappear in a given line of organisms. Thus, option C is wrong.
Bergmann's rule is an ecologic principle stating that body mass increases with latitude. Thus, option D is wrong.
Allen's rule is a biological rule posited by Joel Asaph Allen in 1877. The rule says that the body shapes and proportions of endotherms vary by climatic temperature by either minimizing exposed surface area to minimize heat loss in cold climates or maximizing exposed surface area to maximize heat loss in hot climates. The rule predicts that endotherms from hot climates usually have ears, tails, limbs, snouts, etc. that are long and thin, while equivalent animals from cold climates usually have shorter and thicker versions of those body parts. Thus, option A is correct.
Cope's rule, named after American paleontologist Edward Drinker Cope, postulates that population lineages tend to increase in body size over evolutionary time. Thus, option B is wrong.
Dollos law, biological principle, formulated about 1890 by Louis Dollo, a French-born Belgian paleontologist, that evolution is not reversible; i.e., structures or functions discarded during the course of evolution do not reappear in a given line of organisms. Thus, option C is wrong.
Bergmann's rule is an ecologic principle stating that body mass increases with latitude. Thus, option D is wrong.
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