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Q. No.What percentage of pea plants would be homozygous for their trait in the F2 generation, when tall F1 heterozygous pea plants are selfed?
1.
25
2.
50
3.
75
4.
100
Subtopic: Monohybrid Cross: 1 |
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The number of types of gametes produced by a plant with the genotype AaBbCC [assume independent assortment] will be:
| 1. | 4 | 2. | 6 |
| 3. | 8 | 4. | 64 |
Subtopic: Dihybrid Cross Analysis |
87%
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A gene has seven alleles. The number of possible genotypic combinations will be:
| 1. | 7 | 2. | 8 |
| 3. | 28 | 4. | 56 |
Subtopic: Dihybrid Cross Analysis |
69%
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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%
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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
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%
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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%
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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 |
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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%
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