The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals. Introduction: The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

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Answer 1

Question

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

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Genes at loci f, m, and w are linked, but their order is unknown. The F1 heterozygotes from a cross of FFMMWW x ffmmww are test crossed. The most frequent phenotypes in the test cross progeny will be FMW and fmw regardless of what the gene order turns out to be. What classes of testcross progeny (phenotypes) would be least frequent if locus m is in the middle? What classes would be least frequent if locus f is in the middle? What classes would be least frequent if locus w is in the middle?

Answer 2

Question

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

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Answer 3

Question

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

Answer 6

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

Answer 7

Chapter 26.5, Problem 8SAQ

Summary Introduction

To describe:

The environmental changes recorded by the sedimentary rocks that contain the oldest fossils of large active animals.

Introduction:

The fossils are the old conserved remains found in the rocks. The oldest rocks contain the fossil records of the earliest organisms, while the fossil remains of newly evolved organisms are complex as compared to that of simple organisms. The evolution can be studied with the help of fossil records.

Answer 8

Expert Solution & Answer

Explanation of Solution

In the atmosphere and surface of the oceans, the oxygen started to concentrate nearly about 2400 million years ago . The oxygen level in the atmosphere remains very low over a long time period.

The formation of the multicellular organisms started approximately 580-560 million years ago . The fossils of these multicellular organisms showed the presence of increased levels of oxygen in the atmosphere because they were aerobic organisms.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Conclusion

This shows that the abundant oxygen started to accumulate nearly about 580-560 million years ago . The study of fossils in sedimentary rocks helped in determining the evolution of multicellular organisms and increased levels of oxygen.

Answer 12

Ch. 26.1 - Prob. 1SAQ Ch. 26.2 - Prob. 2SAQ Ch. 26.2 - Prob. 3SAQ Ch. 26.3 - Prob. 4SAQ Ch. 26.3 - Prob. 5SAQ Ch. 26.4 - Prob. 6SAQ Ch. 26.4 - Prob. 7SAQ Ch. 26.5 - Prob. 8SAQ Ch. 26.5 - Prob. 9SAQ

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