Cell Division

6.1 Cell Division
 
Introduction
  • Cells in our body always grow, divide and die.
  • As such, the dead cells must be replaced with new cells.
  • Cells in the body produce new cells through the cell division process.
  • Cell division involves two stages, that is karyokinesis and cytokinesis.
  • Karyokinesis involves the division of the nucleus.
  • Cytokinesis involves the division of the cytoplasm.
  • The organism’s body cells are divided into somatic cells and reproductive cells or gametes.
  • In diploid cells, one set of chromosomes originate from the male parent or paternal chromosomes and another set is from the female parent or maternal chromosomes.
  • Both paternal and maternal chromosomes have the same structural characteristics.
  • This pair of chromosomes are called homologous chromosomes.
  • Chromatin is a chromosome that looks like a long thread.
 
This image is an educational graphic titled Organism Cell from Pandai. It compares somatic cells and gametes. - **Somatic Cell**: - Body cells apart from gametes. - Produced through mitosis. - Contains a diploid number of chromosomes (2n), meaning each cell has two sets of chromosomes. - In human somatic cells, 2n = 46. - **Gamete**: - Reproductive cells. - Produced through meiosis. - Contains a haploid number of chromosomes (n), meaning each cell has one set of chromosomes. - In human gametes, n = 23.

Cell Division

6.1 Cell Division
 
Introduction
  • Cells in our body always grow, divide and die.
  • As such, the dead cells must be replaced with new cells.
  • Cells in the body produce new cells through the cell division process.
  • Cell division involves two stages, that is karyokinesis and cytokinesis.
  • Karyokinesis involves the division of the nucleus.
  • Cytokinesis involves the division of the cytoplasm.
  • The organism’s body cells are divided into somatic cells and reproductive cells or gametes.
  • In diploid cells, one set of chromosomes originate from the male parent or paternal chromosomes and another set is from the female parent or maternal chromosomes.
  • Both paternal and maternal chromosomes have the same structural characteristics.
  • This pair of chromosomes are called homologous chromosomes.
  • Chromatin is a chromosome that looks like a long thread.
 
This image is an educational graphic titled Organism Cell from Pandai. It compares somatic cells and gametes. - **Somatic Cell**: - Body cells apart from gametes. - Produced through mitosis. - Contains a diploid number of chromosomes (2n), meaning each cell has two sets of chromosomes. - In human somatic cells, 2n = 46. - **Gamete**: - Reproductive cells. - Produced through meiosis. - Contains a haploid number of chromosomes (n), meaning each cell has one set of chromosomes. - In human gametes, n = 23.