- 1(current)
Q. No.Mendelian disorders are mainly determined by:
| 1. | Alteration or mutation in a single gene. |
| 2. | Chromosomal gross structural changes. |
| 3. | Recombination between linked genes. |
| 4. | Jumping genes |
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What is the mode of inheritance of phenylketonuria?
| 1. | Autosomal recessive | 2. | Autosomal dominant |
| 3. | Sex linked recessive | 4. | Sex linked dominant |
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In cases of Phenylketonuria:
| 1. | The affected individual lacks an enzyme that converts the amino acid tyrosine into phenylalanine. |
| 2. | The affected individual makes an enzyme that converts the amino acid tyrosine into phenylalanine. |
| 3. | The affected individual makes an enzyme that converts the amino acid phenylalanine into tyrosine. |
| 4. | The affected individual lacks an enzyme that converts the amino acid phenylalanine into tyrosine. |
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In Phenylketonuria,
| I. | Phenylpyruvic acid and other derivatives are accumulated in the brain resulting in mental retardation. |
| II. | These are also excreted through urine because of their poor absorption by the kidney. |
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both are correct | 4. | Both are incorrect |
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- 1(current)
Q. No.
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