In the embryo, the bones of the arms and legs are first made of:
A)cartilage
B)bone
C)fibrous connective tissue
D)elastic connective tissue

Name: In the embryo, the bones of the arms and legs are first made of: A)cartilage B)bone C)fibrous connective tissue D)elastic connective tissue
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Quizplus · Accepted Answer

In the embryo, the bones of the arms and legs are first made of cartilage. As development progresses, the cartilage is replaced by bone through a process called ossification.

In the Embryo, the Bones of the Arms and Legs