Q. No.A test cross is done to find out:
1.
Fitness of an organism
2.
Genotype of a plant expressing dominant phenotype
3.
The suitable parents for a Mendelian Cross
4.
The hidden genotypic ratio of F2 phenotypes
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Haemophilia is inherited as a/an __________ condition.
| 1. | Autosomal recessive | 2. | Autosomal dominant |
| 3. | Sex linked recessive | 4. | Sexlinked dominant |
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A genetic cross between homozygous individuals but with different alleles for a single gene of interest is called as:
| 1. | A reciprocal cross | 2. | Monohybrid cross |
| 3. | Dihybrid cross | 4. | Test cross |
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What can the possible blood groups of progeny whose father and mother are of A and B blood groups, respectively?
| 1. | A and B only | 2. | AB only |
| 3. | All except O | 4. | A, B, AB, and O |
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In case of incomplete dominance, the F1 progeny of a monohybrid cross resembles:
| 1. | Either of the parents | 2. | The male parent |
| 3. | Neither of the parents | 4. | Both parents |
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What is applicable to both Klinefelter’s syndrome and Turner’s syndrome?
| I. | They result from the non-disjunction of sex chromosomes during gamete formation |
| II. | They can be identified by a karyotype |
| III. | They have 44 autosomes |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
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An exchange of segments between non-homologous chromosomes is called as:
1. Crossing over
2. Inversion
3. Reciprocal translocation
4. Transposing
If a father and son are both affected by red-green colour blindness, then what can be said definitely?
| I. | The son has received the trait from the father. |
| II. | The mother of the affected son has to be affected by red-green colour blindness. |
| III. | Any sister of the affected son can never be affected by red-green colour blindness. |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | None |
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