- 1(current)
Q. No.Which of the following is not an X – linked recessive disorder in humans?
| 1. | Red-green colour blindness |
| 2. | Haemophilia |
| 3. | Duchenne muscular dystrophy |
| 4. | Vitamin D-resistant rickets |
Subtopic: Sex Linked Recessive Inheritance |
51%
From NCERT
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Hints
Consider the given two statements:
| Assertion (A): | Sex linked recessive traits are more common in females than in males of the species. |
| Reason (R): | Since females have two X chromosomes, the chances of their getting affected by a recessive X linked gene are higher. |
| 1. | (A) is False but (R) is True |
| 2. | Both (A) and (R) are False |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: Sex Linked Recessive Inheritance |
76%
From NCERT
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If a mother is a carrier for an X-linked recessive disease and the father is unaffected, what is the probability of their child being affected?
| 1. | 25%, if the child is male; 25%, if the child is female |
| 2. | 50%, if the child is male; 0%, if the child is female |
| 3. | 50%, if the child is male; 25%, if the child is female |
| 4. | 25%, if the child is male; 0%, if the child is female |
Subtopic: Sex Linked Recessive Inheritance |
64%
From NCERT
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Hints
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How many of the given genetic disorders are inherited as a recessive condition?
I: Sickle cell anaemia
II: Colour blindness
III: Phenylketonuria
IV: Haemophilia
1. 1
2. 2
3. 3
4. 4
I: Sickle cell anaemia
II: Colour blindness
III: Phenylketonuria
IV: Haemophilia
1. 1
2. 2
3. 3
4. 4
Subtopic: Sex Linked Recessive Inheritance |
78%
From NCERT
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