The genes for the trails that Mendel worked with are either all located on different chromosomes or behave as if they were. How did this help Mendel recognize the principle of independent assortment? a. Otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio of F 2 phenotypes . b. The occurrence of individuals with unexpected phenotypes led him to the discovery of recombination. c. It led him to the realization that the behavior of chromosomes during meiosis explained his results. d. It meant that the alleles involved were either dominant or recessive, which gave 3:1 ratios in the F 1 generation.

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Answer 1

Textbook Question

Chapter 14, Problem 1TYK

The genes for the trails that Mendel worked with are either all located on different chromosomes or behave as if they were. How did this help Mendel recognize the principle of independent assortment?

a. Otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio of F₂ phenotypes.

b. The occurrence of individuals with unexpected phenotypes led him to the discovery of recombination.

c. It led him to the realization that the behavior of chromosomes during meiosis explained his results.

d. It meant that the alleles involved were either dominant or recessive, which gave 3:1 ratios in the F₁ generation.

Expert Solution & Answer

Summary Introduction

Introduction:

The principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

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Students have asked these similar questions

When Mendel was conducting his research, he crossed two different varieties of pea plants, one that had jagged leaves with 8 points on each leaf and one that had perfectly smooth leaves. He found that the offspring all had 4 to 5 points on each leaf. Based on what you have learned in this course, how would you explain this result to Mendel?

Why did Mendel perform "reciprocal crosses"? Someone gives you a bag of yellow peas and you plant them in the Spring. Can you predict the color of the peas that will appear in the pods on the plants grown from these peas? Would your answer be different if you had received a bag of green peas? Explain what Mendel means when he writes that the 3:1 ratio observed in the first generation from the hybrids "resolves itself" into a ratio of 2:1:1

Mendel describes subjecting each of the 34 varieties of peas he obtained to a two-year trial. During this time he let the plants self-fertilize and observed their offspring. What was he looking for, and what was the purpose of doing this two-year trial? Why did Mendel perform "reciprocal crosses"? Someone gives you a bag of yellow peas and you plant them in the Spring. Can you predict the color of the peas that will appear in the pods on the plants grown from these peas? Would your answer be different if you had received a bag of green peas? Explain what Mendel means when he writes that the 3:1 ratio observed in the first generation from the hybrids "resolves itself" into a ratio of 2:1:1

Answer 2

Textbook Question

Chapter 14, Problem 1TYK

The genes for the trails that Mendel worked with are either all located on different chromosomes or behave as if they were. How did this help Mendel recognize the principle of independent assortment?

a. Otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio of F₂ phenotypes.

b. The occurrence of individuals with unexpected phenotypes led him to the discovery of recombination.

c. It led him to the realization that the behavior of chromosomes during meiosis explained his results.

d. It meant that the alleles involved were either dominant or recessive, which gave 3:1 ratios in the F₁ generation.

Expert Solution & Answer

Summary Introduction

Introduction:

The principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

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Answer 3

Textbook Question

Chapter 14, Problem 1TYK

The genes for the trails that Mendel worked with are either all located on different chromosomes or behave as if they were. How did this help Mendel recognize the principle of independent assortment?

a. Otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio of F₂ phenotypes.

b. The occurrence of individuals with unexpected phenotypes led him to the discovery of recombination.

c. It led him to the realization that the behavior of chromosomes during meiosis explained his results.

d. It meant that the alleles involved were either dominant or recessive, which gave 3:1 ratios in the F₁ generation.

Expert Solution & Answer

Summary Introduction

Introduction:

The principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

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Answer 4

Textbook Question

Chapter 14, Problem 1TYK

The genes for the trails that Mendel worked with are either all located on different chromosomes or behave as if they were. How did this help Mendel recognize the principle of independent assortment?

a. Otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio of F₂ phenotypes.

b. The occurrence of individuals with unexpected phenotypes led him to the discovery of recombination.

c. It led him to the realization that the behavior of chromosomes during meiosis explained his results.

d. It meant that the alleles involved were either dominant or recessive, which gave 3:1 ratios in the F₁ generation.

Expert Solution & Answer

Summary Introduction

Introduction:

The principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

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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 principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The principle of independent assortment states that the genes coding for different traits is passed on to the next generation independent of each other. This law of independence assortment holds true only in the case where the two pairs of characters are coded by genes that are present on two different chromosomes.

Answer 12

Answer to Problem 1TYK

Correct answer:

In case the genes for the trait would have been on the same chromosome, the ratio in the F₂ generation would have been other than 9:3:3:1.

Answer 13

Explanation of Solution

Explanation/Justification for the correct answer:

Option (a) is given as the pairs are independently assorted the progeny can have different phenotypes. In case the genes are present on the same chromosome, they might show some degree of linkage. Furthermore, the presence of the genes on the same chromosome would have resulted in crossing over and alteration of the ratio of the F₂ generation. Hence, Option (a) is correct.

Explanation for incorrect answers:

Option (b) is given as the discovery of the recombination as a result of the occurrence of the individuals with unexpected phenotypes. However, the process of recombination was discovered by the experiments conducted by Thomas Hunt Morgan and his colleagues on Drosophila. So, this is the wrong answer.

Option (c) is given as the results obtained during meiosis were due to the behavior of chromosomes. Mendel believed that the determinants of heredity never show blending and never gets modified. So, this is the wrong answer.

Option (d) is given as the 3:1 ratio in the F₁ generation signifying that the alleles involved were either dominant or recessive. The principle of the independent assortment was introduced because of the dihybrid cross. So, this is the wrong answer.

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

Answer 14

Conclusion

Thus, the location of the chromosomes for the genes with which Mendel worked resulted in the unexpected phenotypes that helped him in recognizing the principle of independent assortment.

Answer 15

Ch. 14 - 1. The genes for the trails that Mendel worked...Ch. 14 - 2. CAUTION Why is the pea wrinkled-seed allele a...Ch. 14 - Prob. 3TYK Ch. 14 - 4. Mendel’s rules do not correctly predict...Ch. 14 - Prob. 5TYK Ch. 14 - Prob. 6TYK Ch. 14 - Example Problem Two black female mice are crossed...Ch. 14 - Prob. 8TYK Ch. 14 - Prob. 9TYPSS Ch. 14 - Prob. 10TYPSS

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