Cell Cycle and Cell Division · Question 14

Among eukaryotes, replication of DNA takes place in :

1. S phase
2. G1 phase
3. G2 phase
4. M phase

Match List I with List II: Choose the correct answer from the options given below :

1. A-IV, B-II, C-I, D-III
2. A-IV, B-I, C-II, D-III
3. A-II, B-IV, C-I, D-III
4. A-III, B-II, C-IV, D-I

Select the correct statements. Choose the correct answer from the options given below:

1. B and D only
2. A, C and E only
3. B and E only
4. A and C only

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

1. Both Statement I and Statement II are incorrect.
2. Statement I is correct but Statement II is incorrect.
3. Statement I is incorrect but Statement II is correct.
4. Both Statement I and Statement II are correct.

Which one of the following never occurs during mitotic cell division?

1. Spindle fibres attach to kinetochores of chromosomes
2. Movement of centrioles towards opposite poles
3. Pairing of homologous chromosomes
4. Coiling and condensation of the chromatids

The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:

1. Synaptonemal complex
2. Bivalent
3. Sites at which crossing over occurs
4. Terminalization

Regarding Meiosis, which of the statements is incorrect?

1. There are two stages in Meiosis, Meiosis-I and II
2. DNA replication occurs in S phase of Meiosis-II
3. Pairing of homologous chromosomes and recombination occurs in Meiosis-I
4. Four haploid cells are formed at the end of Meiosis-II

Select the incorrect statement with reference to mitosis :

1. All the chromosomes lie at the equator at metaphase
2. Spindle fibres attach to centromere of chromosomes
3. Chromosomes decondense at telophase
4. Splitting of centromere occurs at anaphase

Which stage of meiosis can last for months or years in the oocytes of some vertebrates?

1. Diakinesis
2. Leptotene
3. Pachytene
4. Diplotene

In meiosis, crossing over and exchange of genetic material between homologous chromosomes are catalyzed by the enzyme

1. Polymerase
2. Phosphorylase
3. Recombinase
4. Transferase