EUGENE M. MCCARTHY, PHD GENETICS
|A human karyotype colored to show chromosome pairs (Full-size image)|
|Note: Meiosis II is very similar to mitosis, except that during meiosis II only one member of each chromosome homolog pair is present, whereas in mitosis both are (it will help you remember this if you pronounce mitosis — only in your own mind! — as "my-TWO-sis").|
Prophase II, the first step of meiosis II, begins with the two daughter cells produced by the first meiotic division (see figure right). As in prophase I, the chromosomes are condensed. During this stage of spermatogenesis, the cells are called secondary spermatocytes, or during oogenesis, secondary oocytes.
Again, the chromosomes are not yet attached to the spindle apparatus, which is growing outward from the centrosomes.