Cell Cycle and Cell Division

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

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

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

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

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

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

Recombination between homologous chromosomes is completed by the end of

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

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

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

The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?

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

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

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

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

Identify the correct sequence of events during Prophase I of meiosis: Choose the correct answer from the options given below:

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

Bivalent or Tetrad formation is a characteristic feature observed during

1. Chiasmata in zygotene stage
2. Synaptonemal complex in zygotene stage
3. Chiasmata in Diplotene stage
4. Synaptonemal complex in Pachytene stage

Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?

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

Match the following with respect to meiosis Select the correct option from the following

1. (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)
2. (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3. (A)-(i), (B)-(ii), (C)-(iv), (D)-(iii)
4. (A)-(ii), (B)-(iv), (C)-(iii), (D)-(i)

Dissolution of the synaptonemal complex occurs during

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

The stage during which separation of the paired homologous chromosomes begins is

1. zygotene
2. pachytene
3. diplotene
4. diakinesis

Which of the following is not a characteristic feature during mitosis in somatic cells?

1. Chromosome movement
2. Synapsis
3. Spindle fibres
4. Disappearance of nucleolus

In meiosis crossing over is initiated at

1. zygotene
2. diplotene
3. pachytene
4. leptotene.

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below.

1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
2. (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
3. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Arrange the following events of meiosis in correct sequence (i) Crossing over (ii) Synapsis (iii) Terminalisation of chiasmata (iv) Disappearance of nucleolus

1. (i), (ii), (iii), (iv)
2. (ii), (iii), (iv), (i)
3. (ii), (i), (iv), (iii)
4. (ii), (i), (iii), (iv)

Select the correct option.

1. (A) - (i); (B) - (ii); (C) - (v); (D) - (iv)
2. (A) - (ii); (B) - (iii); (C) - (iv); (D) - (v)
3. (A) - (ii); (B) - (i); (C) - (iii); (D) - (iv)
4. (A) - (ii); (B) - (iii); (C) - (v); (D) - (iv)

The enzyme recombinase is required at which stage of meiosis?

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

The complex formed by a pair of synapsed homologous chromosomes is called

1. bivalent
2. axoneme
3. equatorial plate
4. kinetochore.

During meiosis I, the chromosomes start pairing at

1. zygotene
2. pachytene
3. diplotene
4. leptotene.

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.

1. Metaphase I
2. Metaphase II
3. Anaphase I
4. Anaphase II

During gamete formation, the enzyme recombinase participates during

1. metaphase I
2. anaphase II
3. prophase I
4. prophase II.

Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? [Figure]

1. Prophase of Mitosis
2. Both prophase and metaphase of mitosis
3. Prophase I during meiosis
4. Prophase-II during meiosis

Synapsis occurs between

1. mRNA and ribosomes
2. spindle fibres and centromere
3. two homologous chromosomes
4. a male and a female gamete