Q. No.| 1. | bb | 2. | Bb |
| 3. | BB/Bb | 4. | BB |
1. TT and TT
2. Tt and tt
3. Tt and Tt
4. tt and tt
| List-I (Type of cross) |
List-II (Phenotypic ratio) |
||
| (A) | Monohybrid cross | (I) | 1:1 |
| (B) | Dihybrid cross | (II) | 1:2:1 |
| (C) | Incomplete dominance | (III) | 3:1 |
| (D) | Test cross | (IV) | 9:3:3:1 |
| Options: | (A) | (B) | (C) | (D) |
| 1. | III | IV | II | I |
| 2. | II | IV | III | I |
| 3. | II | III | IV | I |
| 4. | IV | III | I | II |
1. 30 produced violet and 10 produced white flowers
2. 20 produced violet and 20 produced white flowers.
3. All 40 produced violet flowers
4. All 40 produced white flowers
The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called:
1. Punnett square
2. Net square
3. Bullet square
4. Punch square
A test cross is carried out to:
| 1. | Predict whether two traits are linked |
| 2. | Assess the number of alleles of a gene |
| 3. | Determine whether two species or varieties will breed successfully |
| 4. | Determine the genotype of a plant at F2 |
Test cross in plants or in Drosophila involves crossing:
1. between two genotypes with dominant trait
2. between two genotypes with recessive trait
3. between two F1 hybrids
4. the F1 hybrid with a double recessive genotype
The genotype of a plant showing the dominant phenotype can be determined by:
1. test cross
2. dihybrid cross
3. pedigree analysis
4. back cross
A cross in which an organism showing a dominant phenotype in crossed with the recessive parent in order to know its genotype is called:
1. Back cross
2. Test cross
3. Dihybrid cross
4. Monohybrid cross
A common test to find the genotype of a hybrid is by:
1. crossing of one F2 progeny with a male parent
2. crossing of one F2 progeny with a female parent
3. studying the sexual behaviour of F1 progenies
4. crossing of one F1 progeny with a male parent
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