Diagram how aneuploidy may occur through Mitosis starting from a parent cell at G1 phase. Make sure to distinguish between chromosomes and the following phases of cell division (G1 phase, prophase, metaphase, anaphase, telophase, cytokinesis). Indicate the chromosome equation and chromosome number of the parent cell and the daughter cells.
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
- Diagram how aneuploidy may occur through Mitosis starting from a parent cell at G1 phase. Make sure to distinguish between chromosomes and the following phases of cell division (G1 phase, prophase, metaphase, anaphase, telophase, cytokinesis). Indicate the chromosome equation and chromosome number of the parent cell and the daughter cells.
*S phase and G2 phase purposefully excludedConsider a diploid organism that follows the XX-XO mode of sex determination. Normally, there are 7 chromosomes in its somatic cell. The chromosomal composition is as follows:
- Chromosome I is a large acrocentric chromosome
- Chromosome II is a large telocentric chromosome
- Chromosome III is a small telocentric chromosome
- Chromosome IV (X chromosome) is a medium submetacentric chromosome
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Consider a diploid organism that follows the XX-XO mode of sex determination. Normally, there are 7 chromosomes in its somatic cell. The chromosomal composition is as follows:
- Chromosome I is a large acrocentric chromosome
- Chromosome II is a large telocentric chromosome
- Chromosome III is a small telocentric chromosome
- Chromosome IV (X chromosome) is a medium submetacentric chromosome
Diagram how aneuploidy may occur through Mitosis starting from a parent cell at G1 phase. Make sure to distinguish between chromosomes and the following phases of cell division (G1 phase, prophase, metaphase, anaphase, telophase, cytokinesis). Indicate the chromosome equation and chromosome number of the parent cell and the daughter cells.
*S phase and G2 phase purposefully excluded
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