Differences between meiosis I and meiosis II include:
a
all of these are correct
b
the pairing of chromosomes in meiosis I but not meiosis II.
c
how the chromosomes line up at the equator of the cell during meiosis I or meiosis II.
d
the amount of DNA in a cell at the end of meiosis I or meiosis II.
All of these are correct.
a. Meiosis I and meiosis II are two different stages of the meiotic cell division process.
b. In meiosis I, homologous chromosomes pair and exchange genetic material through a process called crossing over. This pairing and crossing over do not occur in meiosis II.
c. In meiosis I, chromosomes line up at the equator of the cell in pairs (tetrads). In meiosis II, the chromosomes line up individually.
d. Meiosis I reduces the amount of DNA in the cell by half because homologous chromosomes separate. Meiosis II does not involve DNA replication, so the amount of DNA in the cell remains the same.