BIOL 101 INDIVIDUAL ASSIGNMENT 3 REVIEW
AND SOLUTIONS 2026
◉ Meiosis: Answer: cell division that produces reproductive cells in
sexually reproducing organisms; results in four haploid cells.
◉ Interphase: Answer: G1 phase: "gap" where the cell is
biochemically active.
S phase: DNA synthesis; identical copies of DNA are made so that
new cells can have their own DNA.
G2 phase: energy is replentished, cell growth, prepares to actively
divide
- Cell spends the most time in this phase.
◉ Prophase: Answer: - the nuclear envelope breaks down.
- the nucleolus disappears.
- spindle fibers form.
- chromosomes coil tighter and are seen as two threads
(chromatids).
◉ Metaphase: Answer: - chromosomes line up along the metaphase
plate.
- sister chromatids remain attached by cohesion proteins.
,◉ Anaphase: Answer: - chromatids begin to seperate.
- spindle fibers mover sister chromatids in opposite directions
toward the edge of the cell.
◉ Telophase: Answer: - chromosomes reach opposite places and
begin to decondense (unravel) so that they no longer look like two
threads.
- spindle fibers break down.
- nuclear envelopes form around the chromosomes.
- cell membrane begins to divide (cytokinesis) and two daughter
cells are formed.
◉ Prophase 1: Answer: - synapsis and crossing over occur.
◉ Prometaphase 1: Answer: - spindle fiber microtubules attach to
kinetochore proteins at the centromeres.
- homologs are held together at the centromere.
◉ Metaphase 1: Answer: - homologous chromosomes are arranged
at the cell equator with the kinetochores facing opposite poles
(tetrads).
, ◉ Anaphase 1: Answer: - microtubules pull whole chromosomes
apart.
◉ Telophase 1: Answer: - seperated chromosomes arrive at opposite
poles.
- cytokinesis takes place.
- daughter cells are haploid.
◉ Prophase II: Answer: - same events as happened in prophase of
mitosis (synapsis does not take place).
◉ Prometaphase II: Answer: - nuclear envelopes completely
disappear.
- spindle fibers are fully formed and attach to chromosomes.
◉ Metaphase II: Answer: - same events proceed as metaphase in
mitosis.
- chromosomes line up at metaphase plate.
- cells are haploid.
◉ Anaphase II: Answer: - same events as anaphase in mitosis.
- sister chromatids pulled apart to opposite poles.
AND SOLUTIONS 2026
◉ Meiosis: Answer: cell division that produces reproductive cells in
sexually reproducing organisms; results in four haploid cells.
◉ Interphase: Answer: G1 phase: "gap" where the cell is
biochemically active.
S phase: DNA synthesis; identical copies of DNA are made so that
new cells can have their own DNA.
G2 phase: energy is replentished, cell growth, prepares to actively
divide
- Cell spends the most time in this phase.
◉ Prophase: Answer: - the nuclear envelope breaks down.
- the nucleolus disappears.
- spindle fibers form.
- chromosomes coil tighter and are seen as two threads
(chromatids).
◉ Metaphase: Answer: - chromosomes line up along the metaphase
plate.
- sister chromatids remain attached by cohesion proteins.
,◉ Anaphase: Answer: - chromatids begin to seperate.
- spindle fibers mover sister chromatids in opposite directions
toward the edge of the cell.
◉ Telophase: Answer: - chromosomes reach opposite places and
begin to decondense (unravel) so that they no longer look like two
threads.
- spindle fibers break down.
- nuclear envelopes form around the chromosomes.
- cell membrane begins to divide (cytokinesis) and two daughter
cells are formed.
◉ Prophase 1: Answer: - synapsis and crossing over occur.
◉ Prometaphase 1: Answer: - spindle fiber microtubules attach to
kinetochore proteins at the centromeres.
- homologs are held together at the centromere.
◉ Metaphase 1: Answer: - homologous chromosomes are arranged
at the cell equator with the kinetochores facing opposite poles
(tetrads).
, ◉ Anaphase 1: Answer: - microtubules pull whole chromosomes
apart.
◉ Telophase 1: Answer: - seperated chromosomes arrive at opposite
poles.
- cytokinesis takes place.
- daughter cells are haploid.
◉ Prophase II: Answer: - same events as happened in prophase of
mitosis (synapsis does not take place).
◉ Prometaphase II: Answer: - nuclear envelopes completely
disappear.
- spindle fibers are fully formed and attach to chromosomes.
◉ Metaphase II: Answer: - same events proceed as metaphase in
mitosis.
- chromosomes line up at metaphase plate.
- cells are haploid.
◉ Anaphase II: Answer: - same events as anaphase in mitosis.
- sister chromatids pulled apart to opposite poles.
