| 1 |
DNA changes are called mutations and the organisms that have undergone such changes are called |
- A. Wild types
- B. Changer
- C. Mutants
- D. Transmutants
|
| 2 |
Human cells have 46 chromosomes consisting of |
- A. 20 pairs
- B. 21 pairs
- C. 22 pairs
- D. 23 pairs
|
| 3 |
Each tRNA has a sequence of three bases called anticodon which is complementary to codon of |
- A. rRNA
- B. tRNA
- C. mRNA
- D. snRNA
|
| 4 |
Okazaki fragments are about 1000 - 2000 nucleotides long in |
- A. Prokaryotes
- B. Eukaryotes
- C. Both a & b
- D. None of these
|
| 5 |
Advantage of pecking orders is to: |
- A. Avoids injury to the strong animals
- B. Protect territory
- C. Find suitable mate
- D. Assign specific role to individual subordinates
|
| 6 |
Every 200 nucleotides the DNA duplex is coiled around a core of eight histone proteins forming a complex known as a |
- A. Histomone
- B. Nucleosome
- C. Peroxisome
- D. Glyoxisome
|
| 7 |
DNA was discovered in |
- A. 1869
- B. 1864
- C. 1961
- D. 1972
|
| 8 |
The particular array of chromosomes that an individual possesses called its. |
- A. Genotype
- B. Phenotype
- C. epistasis
- D. Karvotype
|
| 9 |
All the 64 codons were tested by |
- A. Marshall Nirenberg
- B. Philip Leader
- C. Har Gobind Khorana
- D. All a,b,and,c
|
| 10 |
A combination of three nucleotides of DNA that specifies as amio acid is called. |
- A. Cistron
- B. Anticodon
- C. Genetic code
- D. Entron
|