Q. No.Which of the following sets includes only recessive traits observed in Pisum sativum?
| 1. | Wrinkled seed shape, Green seed color, White flower color |
| 2. | Round seed shape, Yellow seed color, Purple flower color |
| 3. | Yellow pod color, Inflated pod shape, Axial flower position |
| 4. | Tall stem height, Green pod color, Round seed shape |
Subtopic: Monohybrid Cross: 1 |
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Which is correct about traits chosen by Mendel?
| 1. | Terminal pod is dominant |
| 2. | Constricted pod is dominant |
| 3. | Green colored pod is dominant |
| 4. | Tall plants are recessive |
Subtopic: Introduction to Genetics: 1 | Introduction to Genetics: 2 | Monohybrid Cross: 1 |
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Which of the following is a dominant trait in Pisum sativum?
| 1. | Yellow pod colour | 2. | Green seed colour |
| 3. | Axial flower position | 4. | Constricted pod shape |
Subtopic: Introduction to Genetics: 1 | Introduction to Genetics: 2 | Monohybrid Cross: 1 |
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What is the primary rationale behind using a test cross in genetic analysis?
| 1. | To determine whether an individual displaying a dominant phenotype is homozygous dominant or heterozygous by crossing it with a homozygous recessive organism, which can only contribute recessive alleles. |
| 2. | To confirm the presence of dominant alleles in an individual by crossing it with a homozygous dominant parent, ensuring that all offspring exhibit the dominant phenotype. |
| 3. | To analyze the independent assortment of two different genes by crossing an individual with another that carries a dominant phenotype for both traits. |
| 4. | To eliminate recessive traits from a population by selectively breeding only individuals that exhibit dominant phenotypes. |
Subtopic: Monohybrid Cross: 1 |
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The production of gametes by the parents the formation of zygotes, the F1 and F2 plants can be understood using
| 1. | Pie diagram | 2. | A pyramid diagram |
| 3. | Punnet square | 4. | Wenn diagram |
Subtopic: Monohybrid Cross: 1 |
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NEET - 2021
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Genes which code for a pair of contrasting traits or slightly different forms of the same gene are known as
| 1. | Alleles | 2. | Loci |
| 3. | Cistrons | 4. | Introns |
Subtopic: Monohybrid Cross: 1 |
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A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
| 1. | Blood group B | 2. | Blood group AB |
| 3. | Blood group O | 4. | Blood group A |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
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What term did Mendel use to describe the units of inheritance, now called genes?
| 1. | Chromosomes | 2. | Gametes |
| 3. | Factors | 4. | Alleles |
Subtopic: Monohybrid Cross: 1 |
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What is the concept of dominance in genetics?
| 1. | Dominance refers to a trait that is expressed only in the presence of two identical alleles. |
| 2. | Dominance refers to the interaction between two alleles, where one allele masks the expression of the other in a heterozygous condition. |
| 3. | Dominance refers to the equal expression of both alleles in a heterozygous organism. |
| 4. | Dominance refers to the blending of traits from both alleles in the offspring. |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
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What is the F2 genotypic ratio in cases of incomplete dominance?
| 1. | 1 : 1 | 2. | 3 : 1 |
| 3. | 1 : 2 : 1 | 4. | 1 : 1 |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
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