Understandings:
Applications:
Skills:
Nature of Science:
[Text in square brackets indicates guidance notes]
- 1.6.U1 Mitosis is division of the nucleus into two genetically identical daughter nuclei. [The sequence of events in the four phases of mitosis should be known. To avoid confusion in terminology, teachers are encouraged to refer to the two parts of a chromosome as sister chromatids, while they are attached to each other by a centromere in the early stages of mitosis. From anaphase onwards, when sister chromatids have separated to form individual structures, they should be referred to as chromosomes.]
- 1.6.U2 Chromosomes condense by supercoiling during mitosis.
- 1.6.U3 Cytokinesis occurs after mitosis and is different in plant and animal cells.
- 1.6.U4 Interphase is a very active phase of the cell cycle with many processes occurring in the nucleus and cytoplasm.
- 1.6.U5 Cyclins are involved in the control of the cell cycle.
- 1.6.U6 Mutagens, oncogenes and metastasis are involved in the development of primary and secondary tumors.
Applications:
Skills:
- 1.6.S1 Identification of phases of mitosis in cells viewed with a microscope or in a micrograph. [Preparation of temporary mounts of root squashes is recommended but phases in mitosis can also be viewed using permanent slides.]
- 1.6.S2 Determination of a mitotic index from a micrograph.
Nature of Science:
[Text in square brackets indicates guidance notes]