Mammals have a particularly good sense of earing thanks to their inner ear which includes three tiny bones. Reptiles, in contrast, have a single inner ear bone. The lower jaw of reptiles is composed of multiple bones while the lower jaw of mammals is a single bone. Fossil and developmental evidence indicate that the inner ear bones of mammals evolved from lower jawbones. This suggests that the inner ear bones of mammals are Mammal skull, including ear bones eardrum Reptile skull, including ear bone eardrum a transitional trait a vestigial structure a living fossil an exaptation Oan analogy

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Mammals have a particularly good sense of earing thanks to their inner ear which
includes three tiny bones. Reptiles, in contrast, have a single inner ear bone. The
lower jaw of reptiles is composed of multiple bones while the lower jaw of mammals
is a single bone. Fossil and developmental evidence indicate that the inner ear bones
of mammals evolved from lower jawbones. This suggests that the inner ear bones of
mammals are
Mammal skull, including ear bones
eardrum
Reptile skull, including ear bone
eardrum
Oa transitional trait
a vestigial structure
a living fossil
an exaptation
an analogy
MacBook Air
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8
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D
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Transcribed Image Text:Mammals have a particularly good sense of earing thanks to their inner ear which includes three tiny bones. Reptiles, in contrast, have a single inner ear bone. The lower jaw of reptiles is composed of multiple bones while the lower jaw of mammals is a single bone. Fossil and developmental evidence indicate that the inner ear bones of mammals evolved from lower jawbones. This suggests that the inner ear bones of mammals are Mammal skull, including ear bones eardrum Reptile skull, including ear bone eardrum Oa transitional trait a vestigial structure a living fossil an exaptation an analogy MacBook Air DII DD F2 F3 F4 F5 F6 F7 F8 F9 F10 FV 23 24 % & 3 4. 6 7 8 U D F G H J K ~の * 00 O OO
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