BRAINCAKEMeiosis 2
Meiosis 2 begins after a short interphase during which there is no DNA replication, only decondensation and synthesis of RNA and histones.
The subsequent division is a process very similar to mitosis which ends up with chromatids separating and ending up in daughter cells as chromosomes.
In prophase II, the chromosomes condense and become visible as two chromatids, centrioles move to opposite poles and a mitotic spindle is formed,
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Key terms in this lesson
- nucleolus
- A spherical structure within the nucleus where ribosomal RNA is made and combined with protein to form ribosomes.
- centriole
- A structure made of microtubules that organises the spindle fibres during cell division.
- mitosis
- Nuclear division producing two daughter nuclei that are genetically identical to the parent nucleus, used in growth, repair and asexual reproduction.
- meiosis
- Nuclear division that halves the chromosome number, producing four genetically different haploid daughter cells for use as gametes.
- interphase
- The phase of the cell cycle in which the cell grows, carries out its normal functions and replicates its DNA before division.
More in Cell Division
- Prophase 1
- Metaphase 1
- Anaphase 1
- Telophase 1
- Specialised Cells and Tissues
- Epithelial Cells
- Specialised Plant Cells
- Organs and Organ Systems
All 31 lessons in Cell Division · All OCR AS-level Biology topics