Related Questions
The term ‘meiosis’ was given by
Gregor Mendel
J.B. Farmer and J.E.S. Moore
Walter Sutton
Theodor Boveri
Chiasmata are formed due to
Crossing over of same part between homologous chromosomes
Crossing over of same part between non-homologous chromosomes
Duplication of homologous and non-homologous chromosomes
Loss of some part of chromosomes
In which phase of meiosis does synapsis occur?
Prophase I
Metaphase I
Prophase II
Metaphase II
In meiosis, the chromosome number
Reduces by half
Increase by twice
Increase by four times
Reduces by one-fourth
The dissolution of the synaptonemal complex is a key event that marks the transition between which two stages of prophase I?
Leptotene and Zygotene
Zygotene and Pachytene
Pachytene and Diplotene
Diplotene and Diakinesis
Arrange the following events of meiosis in a correct sequence and choose the correct option
I. Terminalisation
II. Crossing over
III. Synapsis
IV. Disjunction of genomes
IV, III, II and I
III, II, I and IV
II, I, IV and III
I, IV, III and II
A diploid organism has a mutation affecting the formation of the synaptonemal complex. Which of the following is the MOST likely direct consequence of this mutation during meiosis?
Failure of homologous chromosome pairing
Premature separation of sister chromatids
Impaired crossing over and reduced genetic variation
Inhibition of spindle fiber formation
The number of chromosomes becomes half in
Anaphase-I
Anaphase-II
Telpohase-I
Telophase-II
Which of the following stage is responsible for the appearance of Lampbrush chromosomes?
Meiotic prophase
Mitotic prophase
Mitotic anaphase
Mitotic metaphase
Which of the following is unique to mitosis and not a part of meiosis?
Homologous chromosomes behave independently
Chromatids are separated during anaphase
Homologous chromosomes pair and form bivalents
Homologous chromosomes crossover
