The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates. Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

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Answer 1

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Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.

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Alleles at the P locus control seed color. Plants which are pp have white seeds, white flowers and no pigment in vegetative parts. Plants which are P_ have black seeds, purple flowers and may have varying degrees of pigment on stems and leaves. Seed color can be assessed, visually, based on if the seed is white or not white A gene for mold resistance has been reported and we want to determine its inheritance and whether it is linked to P. For the purposes of this exercise, we will assume that resistance is controlled by a single locus M, and M_ plants are resistant and mm plants are susceptible. Resistance can be measured, under greenhouse conditions, 2 weeks after planting, by injecting each seedling with a spore suspension. After two weeks, the seedlings can be rated as resistant or susceptible, based on whether or not tissue is actively sporulating. For this exercise we will use seed and data from the F10 generation of a recombinant inbred population produced using single seed…

Answer 2

Question

Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.

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Answer 3

Question

Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.

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Answer 4

Question

Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.

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Answer 5

Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.

Answer 6

Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.

Answer 7

Chapter 32, Problem 1IQ

Summary Introduction

To determine: The reliable indicator of phylogenetic relationships among acoelomate, pseudocoelomates, and coelomates.

Introduction: Phylogenetic relationships refer to the evolutionary relationships which exist among different organisms. It specifies a time at which two different groups of organisms shared a common ancestor.

Answer 8

Expert Solution & Answer

Explanation of Solution

Acoelomate, pseudocoelomate, and coelomate do not serve as reliable indicators of phylogenetic relationships even though these characters are ancestral because these characters re-evolved and appeared later again. Coelom evolved only one and is a common character in both protostomes and deuterostomes. However, certain protostomes and deuterostomes have evolved to form pseudocoelomic and acoelomic conditions. Further, the pseudocoelomic condition has exhibited convergent evolution in several animal clades and acoelomic condition re-evolved and appeared in Bilataria.