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Q. No.Genes of different traits can segregate independently during the formation of gametes. This is the concept of:
1. Dominance
2. Segregation
3. Independent assortment
4. Linkage
Subtopic: Dihybrid Cross: General Consideration | Dihybrid Cross: Details |
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Consider the two statements:
| Statement I: | Mendel’s law of segregation can also be called as law of purity of gametes. |
| Statement II: | Gametes have two complete sets of chromosomes in plants. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
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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 |
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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 |
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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 |
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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 |
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The unit for measurement of the distance between two linked genes on a chromosome is:
1. Centimorgans
2. Base pairs
3. Micrometers
4. Angstroms
1. Centimorgans
2. Base pairs
3. Micrometers
4. Angstroms
Subtopic: Chromosomal Basis of Inheritance: Further Considerations | Linkage |
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Consider the given two statements:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Each individual has multiple copies [more than two] of the same allele. |
| II: | More than two alleles exist for a particular gene in a population for multiple allelic traits. |
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: Monohybrid Cross: Further Understanding |
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In a cross between two individuals with the genotype AaBb and Aabb, the probability of having an offspring with the genotype Aabb will be:
1. 1/16
2. 1/8
3. 1/4
4. 1/2
1. 1/16
2. 1/8
3. 1/4
4. 1/2
Subtopic: Dihybrid Cross Analysis |
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