- 1(current)
Q. No.In humans, the condition red-green color blindness is a sex-linked recessive trait. In a family pedigree analysis, you find that two people with normal color vision have a color-blind son. This is possible if the genotypes of the parents are:
| 1. | XcXc and XcY | 2. | XcXc and XCY |
| 3. | XCXC and XcY | 4. | XCXc and XCY |
Subtopic: Â Pedigree Analysis: Basics |
 56%
Level 3: 35%-60%
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The pedigree shown below cannot be:
| I. | Autosomal dominant disorder |
| II. | Autosomal recessive disorder |
| III. | Sex-linked dominant disorder |
| IV. | Sex-linked recessive disorder |
| V. | Holandric disorder |
| 1. | I, II, and III only | 2. | I, II, III, and V only |
| 3. | I, III, IV, and V only | 4. | I, II, III, IV and V |
Subtopic: Â Pedigree Analysis: Basics |
Level 3: 35%-60%
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Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character:
| 1. | The parents could not have had a normal daughter for this character |
| 2. | The trait under study could not be colourblindness |
| 3. | The male parent is homozygous dominant |
| 4. | The female parent is heterozygous |
Subtopic: Â Pedigree Analysis: Basics |
Level 3: 35%-60%
AIPMT - 2010
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Pedigree analysis rather than conventional methods are used to study genetic traits because:
| I: | Number of progeny is limited |
| II: | Choice matings are not possible |
| III: | Sexual dimorphism is seen in humans |
1. I only
2. II only
3. III only
4. Both I and II
Subtopic: Â Pedigree Analysis: Basics |
 78%
Level 2: 60%+
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The inheritance pattern of a gene over generations among humans is studied by pedigree analysis. The character studied in the pedigree analysis is equivalent to:
| 1. | quantitative trait | 2. | Mendelian trait |
| 3. | polygenic trait | 4. | maternal trait |
Subtopic: Â Pedigree Analysis: Basics |
 83%
Level 1: 80%+
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- 1(current)
Q. No.
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