| 1 |
In humans, the eye colour is developed due to the effects of. |
- A. Diet
- B. Environment
- C. Genes
- D. Both a and b
|
| 2 |
In humans, a sperm has 23 chromosomeds. Egg cell has. |
- A. 23 chromosomes
- B. 46 chromosomes
- C. No chromosomes
- D. 69 Chromosomes
|
| 3 |
Before mitosis, sets of chromosomes are. |
- A. Two
- B. Three
- C. Four
- D. Five
|
| 4 |
During interphase.............. in the nucleus are duplicated. |
- A. DNA
- B. Gametes
- C. Cytokinesis
- D. Chromosomes
|
| 5 |
In meiosis, the nucleus of a cel dividies. |
- A. One time
- B. Three times
- C. Four times
- D. Five times
|
| 6 |
In maize, there are hromosomes. |
|
| 7 |
In man, every somatic cell has chromosomes. |
|
| 8 |
Chromosoems are made of. |
- A. DNA only
- B. DNA, Proteins and fats
- C. Proteins only
- D. DNA, and proteins
|
| 9 |
Which fo these is NOT a genetic variation. |
- A. Attached earlobes
- B. Blood group
- C. Eye colour
- D. Mark of cut on skin
|
| 10 |
Genes are located on |
- A. Chromosomes
- B. Nucleus
- C. Centrosomes
- D. Cell membrane.
|
