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