Describe the theory of common descent.

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Answer 1

Textbook Question

Chapter 10, Problem 1LTB

Describe the theory of common descent.

Expert Solution & Answer

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Textbook Question

Chapter 10, Problem 1LTB

Describe the theory of common descent.

Expert Solution & Answer

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

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

Answer 3

Textbook Question

Chapter 10, Problem 1LTB

Describe the theory of common descent.

Expert Solution & Answer

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

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

Answer 4

Textbook Question

Chapter 10, Problem 1LTB

Describe the theory of common descent.

Expert Solution & Answer

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

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

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Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

Answer 8

Expert Solution & Answer

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To describe:

The theory of common descent.

Introduction:

The evolutionary theory supports the idea that all the organism existing on the earth today are the evolved from a common ancestor. The common descent is a term referred to the evolutionary mechanism that lead to divergence in different groups from a single ancestor.

Answer 12

Explanation of Solution

The speciation is the process, through which the different species have evolved from a single ancestor. The speciation occurs when the organism genetic composition is changed according to the environment, they are present.

Th evolutionary theories suggest that all the organisms have arisen from a LUCA (last universal common ancestor) through the process of speciation at different times. This theory is supported by the biochemical similarities such as presence of the DNA as genetic material, proteins, and respiration pathways.

The theory of common descents was given by Darwin, itsuggests that as the time passed a single cell resulted in development of more complex characters. This changes in the cell resulted in development of more complex traits and hence, evolution of different species.

Answer 13

Conclusion

The theory of the common descents suggests that all the species living on the earth have evolved from a single ancestor, by introducing more complex traits.

Answer 14

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Describe the theory of common descent.

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