The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that a. bread mold can be grown in a lab on minimal media. b. X-rays can damage DNA. c. cells need enzymes. d. genes specify enzymes.

Question

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Answer 1

Textbook Question

Chapter 15, Problem 1U

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that

a. bread mold can be grown in a lab on minimal media.

b. X-rays can damage DNA.

c. cells need enzymes.

d. genes specify enzymes.

Expert Solution & Answer

Summary Introduction

Introduction:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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

Conclusion

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes.

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Students have asked these similar questions

Three of the many recessive mutations in Drosophila melanogaster that affect body color, wing shape, or bristle morphology are black (b) body versus grey in wild type, dumpy (dp), obliquely truncated wings versus long wings in the male, and hooked (hk) bristles versus not hooked in the wild type. From a cross of a dumpy female with a black and hooked male, all of the F1 were wild type for all three of the characters. The testcross of an F1 female with a dumpy, black, hooked male gave the following results: Trait Number of individuals Wild type 169 Black 19 Black, hooked 301 Dumpy, hooked 21 Hooked, dumpy, black 172 Dumpy, black 6 Dumpy 305 Hooked 8 Determine the order of the genes and the mapping distance between genes. Determine the coefficient of confidence for the portion of the chromosome involved in the cross. How much interference takes place in the cross?

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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

Textbook Question

Chapter 15, Problem 1U

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that

a. bread mold can be grown in a lab on minimal media.

b. X-rays can damage DNA.

c. cells need enzymes.

d. genes specify enzymes.

Expert Solution & Answer

Summary Introduction

Introduction:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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

Conclusion

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes.

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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 15, Problem 1U

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that

a. bread mold can be grown in a lab on minimal media.

b. X-rays can damage DNA.

c. cells need enzymes.

d. genes specify enzymes.

Expert Solution & Answer

Summary Introduction

Introduction:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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

Conclusion

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes.

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 15, Problem 1U

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that

a. bread mold can be grown in a lab on minimal media.

b. X-rays can damage DNA.

c. cells need enzymes.

d. genes specify enzymes.

Expert Solution & Answer

Summary Introduction

Introduction:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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

Conclusion

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes.

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:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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

Conclusion

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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

Conclusion

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

To identify the working nature of genes, scientists from all over the world conducted various experiments. The results revealed by them include, the functions controlled by the genes and the enzymes specified by the genes.

Answer 12

Answer to Problem 1U

Correct answer:

The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes. Therefore, option d. is correct.

Answer 13

Explanation of Solution

Reason for the correct statement:

Beadle and Tatum showed that genes specify enzymes. In neurospora, each enzyme of the arginine pathway was encoded by a separate gene. The mutant species of neurospora were unable to synthesize arginine. Beadle and Tatum found that specific enzymes controlled by specific genes were absent in the mutant neurospora. They proposed the one gene-one enzyme hypothesis.

Option d. is given as "genes specify enzymes".

As, “the experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that genes specify enzymes”, it is the right answer.

Hence, the option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “bread mold can be grown in a lab on minimal media”.

In the experiments conducted by Beadle and Tatum, bread mold was grown to determine the enzymes specific for the growth. So, it is a wrong answer.

Option b. is given as “X-rays can damage DNA”.

The experiments conducted by Beadle and Tatum to determine the limiting factors for specific enzymes and not to determine what X-rays do to the DNA. So, it is a wrong answer.

Option c. is given as “cells need enzymes”.

The experiments conducted by Beadle and Tatum were performed to determine the limiting factors, which control synthesis of enzymes responsible for specific functions. So, it is a wrong answer.

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