The vertebrate classes that are paraphyletic. Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

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Answer 1

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Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.) Data Table 1Stage Totals PercentInterphase Mitosis: Prophase Metaphase Anaphase Telophase Cytokinesis Totals 100 100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…

Answer 2

Question

Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.

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Answer 3

Question

Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.

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Answer 4

Question

Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.

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Answer 5

Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.

Answer 6

Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.

Answer 7

Chapter 34, Problem 1IQ

Summary Introduction

To explain: The vertebrate classes that are paraphyletic.

Introduction: Chordata is divided into Urochordata, Cephalochordata, and Vertebrata. The chordates have several characteristics such as the presence of the notochord, nerve cord, pharyngeal slits, and post-anal tail. The organisms may be placed under different groups based on the presence or absence of ancestor characters.

Answer 8

Expert Solution & Answer

Explanation of Solution

Paraphyletic taxon includes only common ancestors but not all of its descendants. It is known for shared ancestral characters. The fish are paraphyletic. This is because the group consist of all other vertebrates that arose within fishes and Sarcopterygii is a sister taxon. Reptiles are also paraphyletic as birds arise from it and sister taxon to crocodilians. Amphibians may be considered as paraphyletic if extinct amphibians are taken into account as they are more closely related to amniotes.