| 1 |
Phenomenon of crossing over in fruit fly was observed by: |
- A. T.H. Morgan
- B. W.Flemming
- C. Oscar Hertwig
- D. Louis pasteur
|
| 2 |
For mitosis, the chromosomes of the cells are duplicated during interphase. When do the chromosomes duplicated for meiosis? |
- A. Before meiosis 1
- B. Before meiosis 2
- C. During Meiosis 1
- D. Do not duplicate
|
| 3 |
Which of the following stage of cell division is very different for animal and plant cells? |
- A. Telophase
- B. Metaphase
- C. Anaphase
- D. Cytokinesis
|
| 4 |
Which phase of meiosis is similar to mitosis? |
- A. Prophase I
- B. Telophase II
- C. Meiosis I
- D. Meiosis II
|
| 5 |
Chromosomes condensation occurs during .............. . |
- A. G1-phase
- B. G2-phase
- C. S-phase
- D. Interphase
|
| 6 |
Chromatains are condensed during: |
- A. Anaphase
- B. Prophase
- C. Anaphase
- D. Metaphase
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| 7 |
the Genetic variation are produced as a result of .............. . |
- A. Meiosis
- B. Mitosis
- C. Interphase
- D. None
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| 8 |
Modern classification (binomial nomenclature) is based on the work of: |
- A. Caesalpino
- B. John Ray
- C. Tournefort
- D. Carolous Linnaeus
|
| 9 |
Which of the following distinguishes meiosis from mitosis? |
- A. The chromosome number is reduced
- B. Chromosomes undergo crossing over
- C. The daughter cells are genetically different from the parent cell.
- D. All of the above
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| 10 |
Down's sayndrome is an autosomal non-disjunction of chromosomes number ............. . |
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