Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Question

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Answer 1

Question

Chapter 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.

Conclusion

At relatively constant levels, the constitutive genes are expressed at all times.

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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:

a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent. b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved

Answer 2

Question

Chapter 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.

Conclusion

At relatively constant levels, the constitutive genes are expressed at all times.

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Answer 3

Question

Chapter 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.

Conclusion

At relatively constant levels, the constitutive genes are expressed at all times.

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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 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.

Conclusion

At relatively constant levels, the constitutive genes are expressed at all times.

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 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.

Conclusion

At relatively constant levels, the constitutive genes are expressed at all times.

Answer 6

Chapter 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.

Conclusion

At relatively constant levels, the constitutive genes are expressed at all times.

Answer 7

Chapter 13, Problem 1TY

Summary Introduction

Introduction: Genes are the segment of DNA that are referred to as a basic functional and physical unit of hereditary. Some genes contain information that helps in the synthesis of proteins.

Answer 8

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: The constitutive genes are expressed at a relatively constant level at all times. Hence, the correct answer is option d.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for correct answer:

Constitutive genes are also known as housekeeping genes and are required for maintaining the basic cellular functions. Under normal conditions, the constitutive genes are expressed in all the cells of the body at a constant level. The products of constitutive genes support the basic biochemical processes in the cell.

Option d. is given as, “constitutive”.

The genes that are expressed at a relatively constant level at all times are known as constitutive genes. Hence the correct answer is option d.

Reasons for incorrect answer:

Option a. is given as, “inducible”.

Inducible genes are also known as facultative genes, and are only needed as an opposition to a constitutive gene. Hence, option a. is incorrect.

Option b. is given as, “repressible”.

Repressible genes are only required during the growth and maintenance of cell. Hence, option b. is incorrect.

Option c. is given as, “positive”.

Positive genes are not present in the cells of an organism. Hence, option c. is incorrect.

Option e. is given as, “structural”.

Structural genes help in the construction of cellular structures like organelles and membrane. The RNA products of structural genes are not involved in the regulation of the cell. Hence, option e. is incorrect.

Hence, the options a., b., c., and e. are incorrect.