The reasons for the increase in the human population over last 150 years. Introduction: The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

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Answer 1

Question

Chapter 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

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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

Question

Chapter 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

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

Answer 3

Question

Chapter 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

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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 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

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

Answer 5

Chapter 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

Answer 6

Chapter 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

Answer 7

Chapter 14, Problem 1LTB

Summary Introduction

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Answer 8

Expert Solution & Answer

Explanation of Solution

The advancements in the medical technology and with the possibility of treating many diseases, the average death rate of the humans is decreased up to a significant level. The availability of the health care facility has reduced the miscarriages and infant mortality, which increased growth rate to a significant level.

As more infants are able to survive, more individual reach to adulthood and are able to produce more children. This has lead to an increase in the population growth exponentially.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Conclusion

The decrease in the death rate and increase in the survival rate of the infants is the main reason for the explosive increase in human population.

Answer 12

Ch. 14 - Prob. 1LTB Ch. 14 - Prob. 2LTB Ch. 14 - Prob. 3LTB Ch. 14 - Prob. 4LTB Ch. 14 - According to the graph shown here, the carrying...Ch. 14 - All of the following are density-dependent factors...Ch. 14 - In contrast to nonhuman populations, human...Ch. 14 - Populations that rely on stored resources are...Ch. 14 - The current carrying capacity of Earth for the...Ch. 14 - Prob. 10LTB

The reasons for the increase in the human population over last 150 years. Introduction: The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Videos

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Explanation of Solution

Want to see more full solutions like this?

Chapter 14 Solutions

The reasons for the increase in the human population over last 150 years. Introduction: The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Videos

To review: The reasons for the increase in the human population over last 150 years. Introduction: The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.

Explanation of Solution

Want to see more full solutions like this?

Chapter 14 Solutions

To review:

The reasons for the increase in the human population over last 150 years.

Introduction:

The human population is increasing day by day. It is estimated that in last 150 years, the death rate of the population has decreased and the birth rate has increased at a significant level.