- 1(current)
Q. No.The chromosomal theory of inheritance:
| I: | identifies chromosomes as the carriers of genetic material. |
| II: | was given by Sutton and Boveri. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Chromosomal Basis of Inheritance: Introduction | Chromosomal Basis of Inheritance: Further Considerations |
84%
From NCERT
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Consider the given two statements:
| Assertion (A): | The physical basis for segregation is the splitting of centromere during anaphase I of meiosis I. |
| Reason (R): | At anaphase I, the sister chromatids separate and move towards opposite poles. |
| 1. | Both (A) and (R) are False |
| 2. | (A) is True but (R) is 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: Chromosomal Basis of Inheritance: Further Considerations |
56%
From NCERT
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When Morgan hybridised yellow-bodied, white-eyed females to brown-bodied, red-eyed males and intercrossed their F1 progeny, the F2 ratio deviated very significantly from the 9:3:3:1 ratio. This can be attributed to the fact that:
| 1. | The genes are located on the X and Y chromosomes. |
| 2. | Fruit fly has abnormal chromosomes. |
| 3. | The genes are located on the X chromosome. |
| 4. | The genes exhibit incomplete dominance. |
Subtopic: Chromosomal Basis of Inheritance: Introduction | Chromosomal Basis of Inheritance: Further Considerations | Understanding Linkage |
68%
From NCERT
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh
In a fruit fly, the eye colour trait is located on X-chromosome and the vestigial wing trait is located on an autosome. What is the possibility that a cross between a white-eyed male fruit fly with vestigial wings and a wild-type female who is heterozygous for both traits will result in a female offspring with vestigial wings and white eyes?
| 1. | 1/16 | 2. | 1/8 |
| 3. | ¼ | 4. | ½ |
Subtopic: Chromosomal Basis of Inheritance: Further Considerations |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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Consider the given two statements:
| Assertion(A): | Morgan found the use of Drosophila melanogaster as very convenient for his studies. |
| Reason(R): | Morgan was studying mutations and Drosophila melanogaster is haploid and expresses all mutations. |
| 1. | (A) is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 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: Chromosomal Basis of Inheritance: Further Considerations |
78%
From NCERT
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