Question

meiosis
what important events take place during prophase i?
i. chromatin condenses to form visible chromosomes.
ii. the nucleus and nucleolus disintegrate.
iii. homologous chromosomes pair up to form tetrads.
iv. chromosomes line up down the middle of the cell.
a. i only
b. i, ii and iii
c. i and iv
d. i, ii, iii and iv

Explanation:

During prophase I of meiosis, chromatin condenses into visible chromosomes, the nucleus and nucleolus disintegrate, and homologous chromosomes pair up to form tetrads. Chromosomes lining up in the middle of the cell occurs in metaphase, not prophase I.

Answer:

B. I, II and III