Identify the correct sequence of events during Prophase I of meiosis: (a) Synapsis of homologous chromosomes…
Identify the correct sequence of events during Prophase I of meiosis:
(a) Synapsis of homologous chromosomes
(b) Chromosomes become gradually visible under microscope
(c) Crossing over between non-sister chromatids of homologous chromosomes
(d) Terminalisation of chiasmata
(e) Dissolution of synaptonemal complex
Choose the correct answer from the options given below :
(a), (b), (c), (d), (e)
(b), (c), (d), (e), (a)
(b), (a), (c), (e), (d)
(a), (c), (d), (e), (b)
Solution
The order of events during prophase I of Meiosis-I is as follows:
Leptotene $\rightarrow$ Thickening of chromosome
Zygotene $\rightarrow$ Synapsis of chromosome
Pachytene $\rightarrow$ Crossing over
Diplotene $\rightarrow$ Dissolution of synaptonemal complex
Diakinesis $\rightarrow$ Terminalisation of chiasmata.