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Q. No.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 |
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 |
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Q. No.
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