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Q. No.Repeated crosses between two tall plants resulted in all tall offspring. What, most likely, would be the genotypes of both parents?
1. tt X tt
2. Tt and Tt
3. TT and TT
4. Tt and tt
Subtopic: Monohybrid Cross: Further Understanding |
92%
From NCERT
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Which of the following will have an odd number of chromosomes in its somatic cells?
1. male grasshopper
2. female grasshopper
3. male honeybees
4. female honeybees
1. male grasshopper
2. female grasshopper
3. male honeybees
4. female honeybees
Subtopic: Sex Determination |
63%
From NCERT
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What type of characters can easily be studied in the pedigree analysis in human beings?
| 1. | quantitative trait | 2. | Mendelian trait |
| 3. | polygenic trait | 4. | maternal trait |
Subtopic: Pedigree Analysis: Problem Solving | Pedigree Analysis: More Examples |
87%
From NCERT
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Consider the given two statements:
| Statement I: | Bateson and Punnett gave the chromosomal theory of inheritance. |
| Statement II: | de Vries, Correns and Tschermak rediscovered Mendel’s laws. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Chromosomal Basis of Inheritance: Introduction |
91%
From NCERT
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Consider the given two statements:
| Assertion (A): | Scientifically, it is correct to say that the sex of the baby is determined by the father and not by the mother in humans. |
| Reason (R): | In humans, the males are homogametic but the females are heterogametic. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True (R) is False |
| 4. | (A) is False (R) is True |
Subtopic: Sex Determination |
93%
From NCERT
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| Assertion (A): | Pure lines breed true. |
| Reason (R): | Pure lines are heterozygous for the trait. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is False |
Subtopic: Introduction to Genetics: 1 |
88%
From NCERT
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Genes A, B, C, and D are linked. The distances between the genes are:
What is the order of the genes on the chromosome?
1. D B A C
2. D B C A
2. D C B A
4. A B C D
| Relationship | Map Unit |
| D – A | 11 |
| D – B | 7 |
| D – C | 22 |
| B – C | 15 |
| A – B | 4 |
1. D B A C
2. D B C A
2. D C B A
4. A B C D
Subtopic: Recombination Gene Mapping |
93%
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A woman whose father was colorblind marries a normal man. What are the chances that their son would have colorblindness?
1. 0%
2. 25%
3. 50%
4. 100%
1. 0%
2. 25%
3. 50%
4. 100%
Subtopic: Mendelian Disorders |
73%
From NCERT
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A change in chromosome number, where the changed number is not an exact multiple of the base number N, is called as:
| 1. | Polyteny | 2. | Aneuploidy |
| 3. | Polyploidy | 4. | Euploidy |
Subtopic: Non - Disjunction & Aneuploidy | Chromosomal Disorders |
82%
From NCERT
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What, most likely, would be the mode of inheritance if a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny?
| 1. | Autosomal dominant | 2. | Autosomal recessive |
| 3. | Sex-linked dominant | 4. | Sex-linked recessive |
Subtopic: Mendelian Disorders: Hemophilia |
84%
From NCERT
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