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Human Forelimb SCAPULA=A HUMERUS=B RADIUS=C ULNA=D CARPELS (WRIST)=E METACARPELS (HAND)=F PHALANGES (FINGERS)=G Function: hunting & gathering Adapted Structure: long and provides free-range of movementĮlephant Forelimb SCAPULA=A HUMERUS=B RADIUS=C ULNA=D CARPELS (WRIST)=E METACARPELS (HAND)=F PHALANGES (FINGERS)=G Function: supports weight for walking Adapted Structure: thick bones & stacked on top of each other to support body weight Wolf Forelimb SCAPULA=A HUMERUS=B RADIUS=C ULNA=D CARPELS (WRIST)=E METACARPELS (HAND)=F PHALANGES (FINGERS)=G Function: running and hunting Adapted Structure: long & sturdy for speed and power with phalanges in a pad Mole Forelimb SCAPULA=A HUMERUS=B RADIUS=C ULNA=D CARPELS (WRIST)=E METACARPELS (HAND)=F PHALANGES (FINGERS)=G Function: digging Adapted Structure: thick & large structure compared to rest of body (Also – adapted an extra finger – falciform) īat Forelimb SCAPULA=A HUMERUS=B RADIUS=C ULNA=D CARPELS (WRIST)=E METACARPELS (HAND)=F PHALANGES (FINGERS)=G Function: flight Adapted Structure: thin & elongated bone structure

Complete the THREE columns on the worksheet table.HOMOLOGOUS STRUCTURES - traits inherited by two different organisms from a common ancestor that have the same structures, but have adapted different functions.Ĭomparing Mammal Forelimbs SCAPULA=A HUMERUS=B RADIUS=C ULNA=D CARPELS (WRIST)=E METACARPELS (HAND)=F PHALANGES (FINGERS)=G

Some traits shared by two living things were inherited from their ancestor (homologous), and some similarities evolved in other ways (analogous). The similarity between the sisters is inherited, but the similarity between the Elvis impersonators is not. On the other hand, two people attending an Elvis impersonators’ convention may look alike because they are both wearing rhinestone studded suits and long sideburns.

Two sisters, for example, might look alike because they both inherited brown eyes and black hair from their father. Homologous Structures In everyday life, people look like one another for different reasons.