Q. No.Which one of the following is not applicable to RNA?
1. 5’ phosphoryl and 3’ hydroxyl ends
2. Heterocyclic nitrogenous bases
3. Chargaff’s rule
4. Complementary base pairing
1. 5’ phosphoryl and 3’ hydroxyl ends
2. Heterocyclic nitrogenous bases
3. Chargaff’s rule
4. Complementary base pairing
A pleiotropic gene:
1. is a gene evolved during Pliocene.
2. controls a trait only in combination with another gene
3. controls multiple traits in an individual.
4. is expressed only in primitive plants
A gene showing codominance has:
| 1. | alleles tightly linked on the same chromosome |
| 2. | alleles that are recessive to each other |
| 3. | both alleles independently expressed in the heterozygote |
| 4. | one allele dominant on the other |
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates:
1. Both of the characters are controlled by more than one gene.
2. The two genes are located on two different chromosomes.
3. Chromosomes failed to separate during meiosis.
4. The two genes are linked and present on the same chromosome.
Which of the following most appropriately describes haemophilia?
| 1. | Dominant gene disorder |
| 2. | Recessive gene disorder |
| 3. | X-linked recessive gene disorder |
| 4. | Chromosomal disorder |
A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:
1. Polyteny
2. Aneuploidy
3. Polyploidy
4. Somaclonal variation
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The mechanism that causes a gene to move from one linkage group to another is called
1. Crossing-over
2. inversion
3. duplication
4. translocation
Which one from those given below are the periods for Mendel's hybridization experiments?
1. 1856 - 1863
2. 1840 - 1850
3. 1857 - 1869
4. 1870 – 1877
Among the following characters, which one was not considered by Mendel in his experiments on pea?
1. Stem - Tall or Dwarf
2. Trichomes - Glandular or non-glandular
3. Seed - Green or Yellow
4. Pod - Inflated or Constricted
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