Delhi Police Constable Exam > Delhi Police Constable Questions > The genotypic ratio of a monohybrid cross isa...
Start Learning for Free
The genotypic ratio of a monohybrid cross is
- a)1:2:1
- b)3:1
- c)2:1:1
- d)9:3:3:1
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3...
Genotypic Ratio of a Monohybrid Cross:
A monohybrid cross is a genetic cross between two individuals that differ in only one trait. The genotypic ratio refers to the ratio of different genotypes that result from this cross. In a monohybrid cross, there are three possible genotypes for the offspring:
1. Homozygous Dominant (AA): Offspring with two dominant alleles for the trait.
2. Heterozygous (Aa): Offspring with one dominant and one recessive allele for the trait.
3. Homozygous Recessive (aa): Offspring with two recessive alleles for the trait.
The genotypic ratio is determined by the combination of these genotypes in the offspring.
Options for the Genotypic Ratio:
A: 1:2:1
- This ratio suggests that there is an equal chance of obtaining each of the three genotypes in the offspring. It implies that there is a 25% chance for homozygous dominant, 50% chance for heterozygous, and 25% chance for homozygous recessive genotypes. This ratio is characteristic of a monohybrid cross where the dominant allele is not completely dominant over the recessive allele.
B: 3:1
- This ratio suggests that there is a higher chance of obtaining the dominant genotype (homozygous dominant or heterozygous) compared to the recessive genotype. It implies that there is a 75% chance for the dominant genotype and a 25% chance for the recessive genotype. This ratio is characteristic of a monohybrid cross where the dominant allele is completely dominant over the recessive allele.
C: 2:1:1
- This ratio suggests that there is a higher chance of obtaining the dominant genotype (homozygous dominant or heterozygous) compared to the recessive genotype. It implies that there is a 50% chance for the dominant genotype and a 25% chance for each of the two recessive genotypes. This ratio is characteristic of a monohybrid cross where the dominant allele is completely dominant over the recessive allele.
D: 9:3:3:1
- This ratio suggests that there is a higher chance of obtaining specific combinations of genotypes. It implies that there is a 9/16 chance for the dominant phenotype, a 3/16 chance for each of the two heterozygous genotypes, and a 1/16 chance for the recessive phenotype. This ratio is characteristic of a dihybrid cross, which involves the inheritance of two different traits.
Conclusion:
Based on the options given, the correct genotypic ratio for a monohybrid cross is A: 1:2:1. This ratio indicates an equal chance of obtaining each of the three possible genotypes in the offspring.
View all questions of this test
A monohybrid cross is a genetic cross between two individuals that differ in only one trait. The genotypic ratio refers to the ratio of different genotypes that result from this cross. In a monohybrid cross, there are three possible genotypes for the offspring:
1. Homozygous Dominant (AA): Offspring with two dominant alleles for the trait.
2. Heterozygous (Aa): Offspring with one dominant and one recessive allele for the trait.
3. Homozygous Recessive (aa): Offspring with two recessive alleles for the trait.
The genotypic ratio is determined by the combination of these genotypes in the offspring.
Options for the Genotypic Ratio:
A: 1:2:1
- This ratio suggests that there is an equal chance of obtaining each of the three genotypes in the offspring. It implies that there is a 25% chance for homozygous dominant, 50% chance for heterozygous, and 25% chance for homozygous recessive genotypes. This ratio is characteristic of a monohybrid cross where the dominant allele is not completely dominant over the recessive allele.
B: 3:1
- This ratio suggests that there is a higher chance of obtaining the dominant genotype (homozygous dominant or heterozygous) compared to the recessive genotype. It implies that there is a 75% chance for the dominant genotype and a 25% chance for the recessive genotype. This ratio is characteristic of a monohybrid cross where the dominant allele is completely dominant over the recessive allele.
C: 2:1:1
- This ratio suggests that there is a higher chance of obtaining the dominant genotype (homozygous dominant or heterozygous) compared to the recessive genotype. It implies that there is a 50% chance for the dominant genotype and a 25% chance for each of the two recessive genotypes. This ratio is characteristic of a monohybrid cross where the dominant allele is completely dominant over the recessive allele.
D: 9:3:3:1
- This ratio suggests that there is a higher chance of obtaining specific combinations of genotypes. It implies that there is a 9/16 chance for the dominant phenotype, a 3/16 chance for each of the two heterozygous genotypes, and a 1/16 chance for the recessive phenotype. This ratio is characteristic of a dihybrid cross, which involves the inheritance of two different traits.
Conclusion:
Based on the options given, the correct genotypic ratio for a monohybrid cross is A: 1:2:1. This ratio indicates an equal chance of obtaining each of the three possible genotypes in the offspring.
|
Explore Courses for Delhi Police Constable exam
|
|
Similar Delhi Police Constable Doubts
Top Courses for Delhi Police ConstableView all
The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer?
Question Description
The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer?.
The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer?.
Solutions for The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Delhi Police Constable.
Download more important topics, notes, lectures and mock test series for Delhi Police Constable Exam by signing up for free.
Here you can find the meaning of The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer?, a detailed solution for The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The genotypic ratio of a monohybrid cross isa)1:2:1b)3:1c)2:1:1d)9:3:3:1Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Delhi Police Constable tests.
|
|
Explore Courses for Delhi Police Constable exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup