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Q. No.Multiple alleles control inheritance of
1.
Phenylketonuria
2.
Colour blindness
3.
Sickle cell
4.
Blood groups
Subtopic: Co-dominance |
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A dominant is one if it is expressed in
| 1. | Both homozygous and heterozygous states |
| 2. | All the individuals of a generation |
| 3. | Heterozygous combination only |
| 4. | Homozygous combination only |
Subtopic: Monohybrid Cross: 1 |
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A plant with genotype Rr is self pollinated. The percentage of heterozygous individuals obtained will be
| 1. | 100 | 2. | 75 |
| 3. | 50 | 4. | 25 |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
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If the percent recombination between A and B is 15, between A and C is 5, and between B and C is 10, then the order of the genes on the chromosome is
| 1. | A–B–C. | 2. | B–A–C. |
| 3. | A–C–B. | 4. | C–B–A. |
Subtopic: Linkage Types | Recombination & Gene Mapping |
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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 testcross?
| 1. | AABB × AABB | 2. | AaBb × AaBb |
| 3. | AaBb × AABB | 4. | aabb × AaBb |
Subtopic: Monohybrid Cross: 1 |
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When studying an inherited phenomenon, a geneticist discovers a phenotypic ratio of 9 :3 : 3 : 1 among offspring. This means that it is a dihybrid cross where the two genes are
| 1. | completely linke |
| 2. | incompletely linked |
| 3. | independently assorting |
| 4. | epistatic |
Subtopic: Dihybrid Cross Analysis | Dihybrid Cross: General Consideration |
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Subtopic: Introduction to Genetics: 1 | Introduction to Genetics: 2 |
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An organism with two identical alleles is ___________ for the trait.
| 1. | Dominant | 2. | Hybrid |
| 3. | Heterozygous | 4. | Homozygous |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
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The F phenotypic ratio of a dihybrid cross is?
| 1. | 1 : 1 : 1 : 1 | 2. | 1 : 1 |
| 3. | 9 : 3 : 3 : 1 | 4. | 1 : 4 : 6: 4 : 1 |
Subtopic: Dihybrid Cross: General Consideration | Dihybrid Cross: Details |
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