Q.1
Which of the following will you expect to see in zygotene stage?
  • a) Condensed chromosome
  • b) Thin chromatid
  • c) Bead on a string model
  • d) O shaped chromosome
Q.2
Which of the following events is seen in zygotene phase?
  • a) Synapsis
  • b) Recombination
  • c) Terminalization
  • d) Equatorial ring formation
Q.3
If the pairing starts at terminal and proceeds towards centre it is known as ________________
  • a) Procentric
  • b) Proterminal
  • c) Random
  • d) Acrocentric
Q.4
If there is an improper attachment of spindle fiber, which protein sends the negative signal?
  • a) Mcm
  • b) Mdm2
  • c) Mad2
  • d) Mek
Q.5
Pairing of chromosome is initiated by hydrodynamic force.
  • a) True
  • b) False
Q.6
Which of the pairing is not feasible?
  • a) Pairing between homologous chromosomes
  • b) Pairing between homologous parts of non-homologous chromosome
  • c) Pairing between 4 chromosomes following translocation
  • d) Pairing between more than 2 chromosomes
Q.7
Which of the following will not be seen in zygotene?
  • a) Synthesis of Histones
  • b) Synthesis of DNA
  • c) Formation of synaptonemal complex
  • d) Equatorial positioning of chromosomes
Q.8
What is the percentage of DNA synthesized during zygotene?
  • a) 50%
  • b) 25%
  • c) 5%
  • d) 0.4%
Q.9
What is the size of DNA that is left to be replicated in zygotene?
  • d) 104 kb
  • a) 100 bp
  • b) 1000kb
  • c) 104 bp
Q.10
There is a direct correlation between this unreplicated DNA and crossing over sites.
  • a) True
  • b) False
Q.11
The formation of synaptonemal complex is ______________ DNA replication in zygotene.
  • a) Before
  • b) Simultaneous
  • c) After
  • d) Unrelated to
Q.12
Which of the following is true?
  • a) Zygotene is the phase preceding diplotene
  • b) DNA replicated in zygotene is incorporated in chromosome 5-6 days later
  • c) Synaptonemal complex formed is longer than the physical length of chromosomes itself
  • d) The pairing of chromosomes forces the DNA to replicate
0 h : 0 m : 1 s