- 1(current)
Q. No.An abnormality in which there is one more or one fewer than the normal number of chromosomes is called a(an)
1. karyotype
2. fragile site
3. aneuploidy
4. trisomy
1. karyotype
2. fragile site
3. aneuploidy
4. trisomy
Subtopic: Chromosomal Disorders |
90%
Level 1: 80%+
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The syndrome in humans in which an individual's somatic cells contain only the one sex chromosome X/O is called
1. Klinefelter's.
2. Turner's.
3. Down's.
4. superfemale.
1. Klinefelter's.
2. Turner's.
3. Down's.
4. superfemale.
Subtopic: Chromosomal Disorders |
88%
Level 1: 80%+
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Match List-I with List-II:
Choose the correct answer from the options given below:
1. A-II, B-III,C-IV, D-I
2. A-III, B-IV,C-I, D-II
3. A-IV, B-I, C-II, D-III
4. A-I, B-II, C-III, D-IV
| List-I | List-II | ||
| A. | Down's syndrome | I. | \(11^{\text {th }}\) chromosome |
| B. | \(\alpha\) -Thalassemia | II. | \(' \mathrm{X} '\) chromosome |
| C. | \(\beta\) -Thalassemia | III. | \(21^{\text {st }}\) chromosome |
| D. | Klinefelter's syndrome |
IV. | \(16^{\text {th }}\) chromosome |
Choose the correct answer from the options given below:
1. A-II, B-III,C-IV, D-I
2. A-III, B-IV,C-I, D-II
3. A-IV, B-I, C-II, D-III
4. A-I, B-II, C-III, D-IV
Subtopic: Mendelian Disorders | Chromosomal Disorders |
88%
Level 1: 80%+
NEET - 2024
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How does Turner’s syndrome differ genetically from Klinefelter’s syndrome?
| 1. | Turner’s syndrome results from an additional chromosome; Klinefelter’s results from a missing chromosome. |
| 2. | Turner’s syndrome involves monosomy (45, XO); Klinefelter’s involves trisomy (47, XXY). |
| 3. | Both are due to duplication of sex chromosomes. |
| 4. | Turner’s affects males, while Klinefelter’s affects females. |
Subtopic: Chromosomal Disorders |
87%
Level 1: 80%+
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An individual who is missing one chromosome, having only one member of a given pair, is said to be
1. monosomic
2. haploid
3. trisomic
4. consanguineous
1. monosomic
2. haploid
3. trisomic
4. consanguineous
Subtopic: Chromosomal Disorders |
87%
Level 1: 80%+
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Klinefelter's syndrome (47, XXY) results from nondisjunction during gamete formation. Arrange the following events in the correct sequence that leads to this condition:
P: Fertilisation of abnormal egg by normal sperm
Q: Nondisjunction of sex chromosomes during meiosis I or II
R: Formation of gamete with two X chromosomes
S: Zygote develops with 47 chromosomes (44 autosomes + XXY)
1. Q → P → R → S
2. R → Q → S → P
3. P → Q → R → S
4. Q → R → P → S
P: Fertilisation of abnormal egg by normal sperm
Q: Nondisjunction of sex chromosomes during meiosis I or II
R: Formation of gamete with two X chromosomes
S: Zygote develops with 47 chromosomes (44 autosomes + XXY)
1. Q → P → R → S
2. R → Q → S → P
3. P → Q → R → S
4. Q → R → P → S
Subtopic: Sex Aneuploidy - Turner & Klinefelter Syndrome | Chromosomal Disorders |
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- 1(current)
Q. No.
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