Question

Which of the following is not a characteristic of meiosis?

(a) It involves two stages of DNA replication one before meiosis-I and another before meiosis-II.

(b) It involves recombination and crossing over

(c) Sister chromatids separate during anaphase-II

(d) Nuclear membrane disappears during prophase.

Answer 1

The correct option is: (a) It involves two stages of DNA replication one before meiosis-I and another before meiosis-II.

Explanation:

Chromosome replication occurs once but meiosis has two M-phases each with its own karyokinesis and cytokinesis. As a result chromosome number is halved. The transition period between M-phase I (meiosis I ) and M-phase II (meiosis II) is short and without DNA replication. It is called interkinesis.