Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F 1 generation. The dominant allele out of the two alleles expresses itself and determines the phenotype .

Question

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Answer 1

Question

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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

Conclusion

Alleles are the alternate versions of a gene coding for a trait.

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Answer 2

Question

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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

Conclusion

Alleles are the alternate versions of a gene coding for a trait.

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Answer 3

Question

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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

Conclusion

Alleles are the alternate versions of a gene coding for a trait.

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Answer 4

Question

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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

Conclusion

Alleles are the alternate versions of a gene coding for a trait.

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Answer 5

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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

Conclusion

Alleles are the alternate versions of a gene coding for a trait.

Answer 6

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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

Conclusion

Alleles are the alternate versions of a gene coding for a trait.

Answer 7

Chapter 9, Problem 1SQ

Summary Introduction

Introduction: Genes are DNA sequences that code for specific traits. The specific position of a gene on a chromosome is known as locus. Genes have alternate forms known as alleles that are transmitted to offspring. If the two alleles are different, then there is a hybrid at F₁ generation. The dominant allele out of the two alleles expresses itself and determines the phenotype.

Answer 8

Expert Solution & Answer

Answer to Problem 1SQ

Correct answer: Alternate versions of a gene for a given trait are called alleles. Therefore, option a. is correct.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for the correct statement:

Genes exist in two alternate versions called as alleles. Alleles occupy the same position known as locus on chromosomes. Each diploid organism consists of two sets of chromosomes known as homologous chromosomes. These homologous chromosomes each consist of one allele of a gene. If the two alleles at the gene locus are the same, it is known as homozygous and if two alleles are different, it is known as heterozygous.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “heterozygotes”. Heterozygotes refer to those that have two different alleles of a gene. Hence, it is a wrong answer.

Option c. is given as “genotypes”. Genotype is the whole genetic makeup of an organism. Hence, it is a wrong answer.

Option d. is given as “copies of a gene”. The copies of a gene are formed by its duplication. Hence, it is a wrong answer.

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