The origin and derived traits of the tetrapods. Concept introduction: Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

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Answer 1

Question

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

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Answer 2

Question

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

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Answer 3

Question

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

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Answer 4

Question

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

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Answer 5

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

Answer 6

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

Answer 7

Chapter 34.4, Problem 1CC

Summary Introduction

To determine: The origin and derived traits of the tetrapods.

Concept introduction:

Tetrapods originated about 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the “lobe finned fishes”. The early tetra pods have limb present in place of the pelvic and the pectoral, but still used to have the aquatic mode of life. They have various derived characters, like the separated head from the body in the presence of the neck and the presence of the pelvic girdle bone in them.

Answer 8

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Answer 10

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Answer 11

Ch. 34.1 - Identify four derived characters that all...Ch. 34.1 - Prob. 2CC Ch. 34.1 - VISUAL SKILLS Based on the phylogenetic tree...Ch. 34.2 - How are differences in the anatomy of lampreys and...Ch. 34.2 - WHAT IF? In several different animal lineages,...Ch. 34.2 - WHAT IF? Suggest key roles that mineralized bone...Ch. 34.3 - What derived characters do sharks and tuna share?...Ch. 34.3 - Describe key adaptations of aquatic gnathostomes.Ch. 34.3 - draw it Redraw Figure 34.2 to show four lineages:...Ch. 34.3 - WHAT IF? Imagine that we could replay the history...

Solution Summary: The author explains that tetrapods originated 400 million years ago in the Devonian period. They evolved from the Sarcopterygii the "lobe finned fishes".

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