A prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growth

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 20, Problem 1TYU

A prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growth

Expert Solution & Answer

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

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!

Students have asked these similar questions

What are biofertilizers and mention the significance

PCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen. How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans? Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.

Other than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?

Answer 2

Textbook Question

Chapter 20, Problem 1TYU

A prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growth

Expert Solution & Answer

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

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 3

Textbook Question

Chapter 20, Problem 1TYU

A prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growth

Expert Solution & Answer

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

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 4

Textbook Question

Chapter 20, Problem 1TYU

A prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growth

Expert Solution & Answer

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

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

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction: The biological species concepts define species as the group of members which can interbreed among themselves and produce fertile offspring. It explains the integrity of a species is maintained by reproductive isolation. The prezygotic barriers are the important role players to prevent interspecies breeding.

Answer 12

Answer to Problem 1TYU

Correct answer: A prezygotic barriers prevent the fertilization process by the union of egg and sperm of two different species. Hence, the correct answer is option (a).

Answer 13

Explanation of Solution

Reason for correct answer:

The reproductive isolation by prezygotic barriers prevents the event of fertilization of the gametes of the gametes of two different species. The prezygotic barrier as its name suggests is the barrier having several mechanisms to discourage different species including closely related species to not to mate with each other and become reproductively isolated.

Option (a) is given as “the union of egg and sperm”.

The union of egg and sperm is prevented by the prezygotic barrier. Hence, the correct answer is option (a).

Reasons for incorrect answer:

Option (b) is given as, “reproductive success by an interspecific hybrid”.

The prezygotic barrier as the name suggests is a barrier which prevents the formation of zygote. Instead, the reproductive success of an interspecific hybrid is checked by the means of postzygotic barriers. Hence, option (b) is incorrect.

Option (c) is given as, “the development of the zygote into an embryo”.

The development of the zygote into an embryo is checked by the means of reproductive failure mechanism which is a part of postzygotic barriers instead of the prezygotic barrier. Hence, option (c) is incorrect.

Option (d) is given as, “allopolyploidy from occurring”.

The prezygotic barriers do not prevent allopolyploids instead of postzygotic barriers along with selection pressure checks allopolyploidy. Hence, option (d) is incorrect.

Option (e) is given as, “changes in allometric growth”.

The changes in allometric growth are a result of adaptive evolutionary modifications of pre-existing characters of the same species whereas prezygotic barriers prevent fertilization and mating between two different species. Hence, option (e) is incorrect.

Hence, the options (b), (c), (d), and (e) are incorrect.

Answer 14

Conclusion

A prezygotic barrier is an isolation mechanism which prevents fusion of male and female gametes (sperm and egg).

Answer 15

Ch. 20.1 - Describe the biological species concept and list...Ch. 20.1 - Prob. 1C Ch. 20.1 - Prob. 2C Ch. 20.1 - Prob. 3C Ch. 20.2 - Explain the significance of reproductive isolating...Ch. 20.2 - What barriers prevent wood frogs and leopard frogs...Ch. 20.2 - How is temporal isolation different from...Ch. 20.2 - Prob. 3C Ch. 20.2 - Of which postzygotic barrier is the mule an...Ch. 20.3 - Prob. 3LO

A prezygotic barrier prevents (a) the union of egg and sperm (b) reproductive success by an interspecific hybrid (c) the development of the zygote into an embryo (d) allopolyploidy from occurring (e) changes in allometric growth

Videos

Answer to Problem 1TYU

Explanation of Solution

Want to see more full solutions like this?

Chapter 20 Solutions