Meiosis- quiz

• Meiosis- sex cells are produced from one parent cell, each cell has half the number of chromosomes
• Diploid, means having having two sets of homologous chromosomes.
• If cells divide by mitosis, the daughter cells are formed which are the gametes, and are expected to be diploid cells.
• If you want to maintain the chromosome number of a species, a type of cell division called meiosis is used.
• There are different stages of meiosis, Meiosis I and Meiosis II.
• In Meiosis I, it consists of prophase I, metaphase I, anaphase I, and telophase I
• In Meiosis II, it consists of prophase II, metaphase II, anaphase II, and telophase II
• In prophase I, the chromosomes condense and the nuclear envelope breaks down. And synapsis and crossing over happens, while they are paired.
• In Metaphase I, the homologous pairs line up at the equator of the cell.
• During Anaphase I, the centromeres divide and the homologous chromosomes separate.
• Telophase I is the same as the mitotic phase, the chromosomes arrive at opposite poles and begin to uncoil.
• Metaphase II is also similar to Metaphase I, where the sister chromatids align along the equator.
• Prophase II is similar to Prophase I, but there's no synapsis or crossing over.
• In Meiosis II, the same things happen at Meiosis I except four haploid daughter cells are produced, instead of just two.
• Anaphase II is when the sister chromatids separate and move to opposite poles of the cell
• Telophase II is when the nuclear envelope reforms and the chromosomes are pulled to opposite poles
• The process of meiosis involves one round of DNA replication followed by two rounds of division
• In Prophase II, the chromosomes condense and the nuclear envelope breaks down.
• In Metaphase II, the chromosomes line up along the equator of the cell.
• In Anaphase II, the sister chromatids separate and move to opposite poles of the cell
• In Telophase II, the nuclear envelopes form around the new sets of chromosomes at either pole of the cell.