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Chromosome synapsis or bivalent formation occurs in ______
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Chromosome synapsis or bivalent formation occurs in ______

A
leptotene

B
zygotene

C
pachytene

D
diplotene

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Xtract Objective Biology for NEET (Disha)

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Synapsis is the pairing of two homologous chromosomes during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. The process of attachment of homologous chromosomes leads to the formation of bivalents. These two events occur in zygotene stage of prophase I.
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Practice questions from Xtract Objective Biology for NEET (Disha)

Question 1
Medium
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Find the correctly matched pairs and choose the correct option.
A. Zygotene – Pairing of homologous chromosomes
B. Pachytene – Dissolution of the complex synaptonemal takes place
C. Diplotene – Bivalent chromosomes appear as tetrads
D. Diakinesis – Terminalization of chiasmata takes place
  1. A and C
  2. A and D
  3. A and B
  4. B and C
Topic

Topic:

Cell Cycle and Cell Division

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Xtract Objective Biology for NEET (Disha)

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Question 2
Easy
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The microtubules of the mitotic spindle attach to a specializes structure in the centromere region of each chromosome called the __________.
  1. Telomere
  2. Centriole
  3. Chromatin
  4. Kinetochore
Topic

Topic:

Cell Cycle and Cell Division

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Book:

Xtract Objective Biology for NEET (Disha)

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Question 3
Medium
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In the following question, a statement of Assertion is followed by a statement of Reason
Assertion: Karyokinesis follows cytokinesis.
Reason: Karyokinesis is the division of cytoplasm into two daughter cells.
  1. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  2. If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  3. If Assertion is true but Reason is false.
  4. If both Assertion and Reason are false.
Topic

Topic:

Cell Cycle and Cell Division

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Book:

Xtract Objective Biology for NEET (Disha)

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Question 4
Easy
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In mitosis, nucleolus and nuclear membrane disappear at
  1. interphase
  2. prophase
  3. metaphase
  4. telophase
Topic

Topic:

Cell Cycle and Cell Division

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Book:

Xtract Objective Biology for NEET (Disha)

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Practice more questions from Cell Cycle and Cell Division

Question 1
Easy
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Views: 5,319

Mitosis is characterized by
  1. Reduction division
  2. Equal division
  3. Both (a) and (b)
  4. Absence of spindle formation
Topic

Topic:

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In which stage of the cell cycle histone proteins synthesized in a eukaryotic cell?
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(c) Nerve cell
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  4. a, b and c
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Question Text
Chromosome synapsis or bivalent formation occurs in ______
TopicCell Cycle and Cell Division
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes147