List - I | List - II | ||
(Type of cross) | (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 |
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
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow-seeded plant is crossed with a green-seeded plant, what ratio of yellow and green-seeded plants would you expect in F1generation?
1. 50:50
2. 9:1
3. 1:3
4. 3:1
Test cross involves:
1. | crossing between two genotypes with recessive trait |
2. | crossing between two F1 hybrids |
3. | crossing the F1 hybrid with a double recessive genotype |
4. | crossing between two genotypes with the trait |