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

Want to see more full solutions like this?

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.

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

Ch.23 How is Salmonella able to cross from the intestines into the blood? A. it is so small that it can squeeze between intestinal cells B. it secretes a toxin that induces its uptake into intestinal epithelial cells C. it secretes enzymes that create perforations in the intestine D. it can get into the blood only if the bacteria are deposited directly there, that is, through a puncture — Which virus is associated with liver cancer? A. hepatitis A B. hepatitis B C. hepatitis C D. both hepatitis B and C — explain your answer thoroughly

Ch.21 What causes patients infected with the yellow fever virus to turn yellow (jaundice)? A. low blood pressure and anemia B. excess leukocytes C. alteration of skin pigments D. liver damage in final stage of disease — What is the advantage for malarial parasites to grow and replicate in red blood cells? A. able to spread quickly B. able to avoid immune detection C. low oxygen environment for growth D. cooler area of the body for growth — Which microbe does not live part of its lifecycle outside humans? A. Toxoplasma gondii B. Cytomegalovirus C. Francisella tularensis D. Plasmodium falciparum — explain your answer thoroughly

Ch.22 Streptococcus pneumoniae has a capsule to protect it from killing by alveolar macrophages, which kill bacteria by… A. cytokines B. antibodies C. complement D. phagocytosis — What fact about the influenza virus allows the dramatic antigenic shift that generates novel strains? A. very large size B. enveloped C. segmented genome D. over 100 genes — explain your answer thoroughly

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.

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

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.

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

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.

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 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.