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Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter29: Vertebrates

Section: Chapter Questions

Problem 7RQ: Members of Chondrichthyes differ from members of Osteichthyes by having (a). jaw bony skeleton...

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Make a phylogenetic tree about: Amphioxus; Lamprey; an osteostracan( derived ostracoderm); Reef shark;African lungfish and cichlid ( teleost fish)

and label the cladogram with the following clades and characters

Clade:Chordata; Vertebrata; Gnathostomata; Chondrichthyes 5. Osteichthyes (bony fishes); Sarcopterygii (lobe-finned fishes) and Actinopterygii (ray-finned fishes)

Characters: Notochord; Muscular pharynx; Dermal bone; Pectoral fins • Jaw; Pelvic fins; Endochondral bone; Lobed fins and 7 clusters of Hox genes

Amphioxus; Lamprey; an osteostracan( derived ostracoderm); Reef shark;African lungfish and cichlid ( teleost fish)

and label the cladogram with the following clades and characters

Clade:Chordata; Vertebrata; Gnathostomata; Chondrichthyes 5. Osteichthyes (bony fishes); Sarcopterygii (lobe-finned fishes) and Actinopterygii (ray-finned fishes)

Characters: Notochord; Muscular pharynx; Dermal bone; Pectoral fins • Jaw; Pelvic fins; Endochondral bone; Lobed fins and 7 clusters of Hox genes

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