Question

meiosis: stages of meiosis - meiosis ii
name each phase of the second meiotic division and drag & drop the descriptions

the spindle fibers contract,
separating the
sister chromatids
and pulling them
to opposite ends
of the cell.

the spindle fibers
have formed and
the chromosomes
line up along the
middle of the cell

a nuclear
envelope reforms
at each pole and
then cytokinesis
divides the cell
into two. each cell
is haploid. the
chromosomes will
decondense.

the nuclear
envelope breaks
down. pairs of
centrioles (also
known as
centrosomes)
start to move to
opposite poles.

Explanation:

1. First phase (top/bottom first cell): The nuclear envelope breaks down, centrosomes move to poles. This matches Prophase II.
2. Second phase (top/bottom second cell): Spindle forms, chromosomes line up at cell middle. This matches Metaphase II.
3. Third phase (top/bottom third cell): Spindle fibers pull sister chromatids to opposite ends. This matches Anaphase II.
4. Fourth phase (top/bottom fourth cell): Nuclear envelope reforms, cytokinesis creates haploid cells. This matches Telophase II/Cytokinesis.

Answer:

From left to right, the phases and their matching descriptions are:

1. Prophase II: The nuclear envelope breaks down. Pairs of centrioles (also known as centrosomes) start to move to opposite poles.
2. Metaphase II: The spindle fibers have formed and the chromosomes line up along the middle of the cell.
3. Anaphase II: The spindle fibers contract, separating the sister chromatids and pulling them to opposite ends of the cell.
4. Telophase II/Cytokinesis: A nuclear envelope reforms at each pole and then cytokinesis divides the cell into two. Each cell is haploid. The chromosomes will decondense.