Click here
Persue Exclusive Conceptual MCQs – Cell Cycle & Cell Division
Question 1
The absence of chiasmata during prophase I would directly affect which process?
  • (A) Synapsis of homologous chromosomes
  • (B) Genetic recombination
  • (C) Disjunction of sister chromatids
  • (D) Spindle formation
Question 2
In which stage of prophase I do homologous chromosomes start to separate but remain attached at chiasmata?
  • (A) Pachytene
  • (B) Zygotene
  • (C) Leptotene
  • (D) Diplotene
Question 3
What is the key molecular event that distinguishes S phase from G1 and G2 phases?
  • (A) Spindle formation
  • (B) Nuclear envelope breakdown
  • (C) Semiconservative DNA replication
  • (D) Translation of mRNA
Question 4
In meiosis, the term “reductional division” refers specifically to:
  • (A) Reduction of cell size
  • (B) Halving of chromosome number
  • (C) Formation of gametes
  • (D) Synthesis of new DNA strands
Question 5
What would be the result if cytokinesis did not occur after karyokinesis in mitosis?
  • (A) Binucleated cell
  • (B) Apoptosis
  • (C) Polyploidy
  • (D) Cell with fragmented DNA
Question 6
Why is metaphase II essential in ensuring gametic genetic integrity?
  • (A) It allows bivalents to align at the equator
  • (B) It ensures crossing over occurs
  • (C) It aligns individual chromosomes to ensure equal chromatid segregation
  • (D) It duplicates DNA to ensure gene pairing
Question 7
During anaphase I, the chromosome number:
  • (A) Doubles
  • (B) Halves
  • (C) Remains the same
  • (D) Becomes polyploid
Question 8
Which combination of events best characterizes Telophase I in meiosis?
  • (A) Disappearance of chiasmata and DNA replication
  • (B) Chromosomes reach poles and nuclear envelope reforms
  • (C) Chromosomes condense and centrioles migrate
  • (D) Spindle forms and bivalents align
Question 9
Interkinesis differs from interphase because:
  • (A) DNA replication occurs again
  • (B) It is shorter and lacks DNA synthesis
  • (C) Chromosome number doubles
  • (D) Cell grows actively for mitosis
Question 10
Which of the following are structurally and functionally active during late G2 phase?
  • (A) Centrosome duplication
  • (B) DNA synthesis
  • (C) Synthesis of proteins for mitosis
  • (D) Synapsis of chromosomes
Made with