| 1 |
Adenine and guanine are called |
- A. Purines
- B. Pyrmidines
- C. Both a & b
- D. None of these
|
| 2 |
How many million nucleotides are in DNA of typical human chromosome |
- A. 140
- B. 160
- C. 180
- D. 200
|
| 3 |
In 1953 Watson and Crick proposed structure of the |
- A. RNA molecule
- B. ATP molecule
- C. DNA molecule
- D. NAD molecule
|
| 4 |
A strand of DNA, which is not transcribed is called as. |
- A. Template strand
- B. Antisense strand
- C. Lagging strand
- D. coding strand
|
| 5 |
Walter Fleming first discovered chromosomes in the dividing cells of. |
- A. Frog larvae
- B. Sea urchin larvae
- C. Insect larvae
- D. Salamander larvae
|
| 6 |
Highly condensed portions of the chromatin are called. |
- A. Homochromatin
- B. Heterochromatin
- C. Euchromatin
- D. Achromatin
|
| 7 |
Amino acid attachment site of tRNA is. |
- A. G-end
- B. 2' -end
- C. 3'- end
- D. 5' -end
|
| 8 |
Unlike most proteins, histones are. |
- A. Positively charges
- B. Neutral
- C. discharged
- D. Negatively charged
|
| 9 |
Chromosomal part which uncoils, during inter phase is called. |
- A. Chromatids
- B. Satellite DNA
- C. Euchromatin
- D. Heterochromatin
|
| 10 |
In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of |
- A. Lamarck
- B. Griffith
- C. Darwin
- D. Spemann
|