*During anaphase, sister chromatids separate and are momentarily counted as individual chromosomes before cytokinesis. Part 2: Meiosis
| Stage | DNA Content (per cell) | Chromosome Structure | Ploidy | | :--- | :--- | :--- | :--- | | G1 Phase (pre-division) | 2C | Unduplicated | Diploid (2n) | | G2 Phase (post-replication) | 4C | Duplicated (sister chromatids) | Diploid (2n) | | End of Mitosis | 2C (each daughter) | Unduplicated | Diploid (2n) | | End of Meiosis I | 2C (each cell) | Duplicated | Haploid (n) | | End of Meiosis II | 1C (each gamete) | Unduplicated | Haploid (n) |
always doubles the DNA amount (C), but not the set number (n). dna content through mitosis and meiosis activity
The cell remains at 4C . The DNA is condensed and lined up.
In this activity, you will work with a hypothetical diploid organism where .Assume the initial DNA content in G1cap G sub 1 phase is . Part 1: Mitosis The DNA is condensed and lined up
No DNA replication occurs between Meiosis I and II. The cell starts Meiosis II with a 2C DNA content. In anaphase II, the sister chromatids finally separate. At the end of telophase II and cytokinesis, each of the four resulting gametes contains a 1C DNA content. The original 4C of DNA has been partitioned into four genetically unique cells, each with half the DNA of the original diploid parent.
Prior to any division event, a cell must duplicate its genetic material. This occurs during the S-phase of the cell cycle. The cell starts Meiosis II with a 2C DNA content
Meiosis I separates homologous pairs of chromosomes.
DNA Content through Mitosis and Meiosis Activity. You are working with a diploid organism with the chromosome. makeup shown below. Make Like a Cell and Split: Comparing Mitosis and Meiosis
Meiosis II resembles mitosis but occurs in haploid cells.