Prophase under microscope
“Despite years of research, we know very little about how chromosomes are positioned especially at the prophase stage of the cell cycle," says Dr Mohammed Yusuf, an assistant professor at Aga Khan University's Centre for Regenerative Medicine and Stem Cell Research, CRM. The 3D map, which is accurate to the nanometre or billionth of a metre, will help researchers study changes in both the number and positioning of chromosomes during prophase that may result in the development of genetic illnesses and disorders. The prophase stage represents the first step in the process of mitosis, or cell division, in which the genetic material condenses into recognisable entities known as chromosomes.
Prepared slide labeled 'whitefish blastula, mitosis'.Prepared slide labeled 'Allium root, mitosis'.Be able to correctly identify the phases from both plant and animal tissue. Compare the differences between plant and animal mitosis. Study Guide: Plant and Animal Mitosis Your objective:įind and make observations of cells in each phase of mitosis in plant and animal tissue. Students know that as multicellular organisms develop, their cells differentiate. Students know cells divide to increase their numbers through a process of mitosis, which results in two daughter cells with identical sets of chromosomes. Students know the nucleus is the repository for genetic information in plant and animal cells. Students know the characteristics that distinguish plant cells from animal cells, including chloroplasts and cell walls. As a basis for understanding this concept: All living organisms are composed of cells, from just one to many trillions, whose details usually are visible only through a microscope. Students know how prokaryotic cells, eukaryotic cells (including those from plants and animals), and viruses differ in complexity and general structure.ġ. The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism's cells. You will make observational drawings and be prepared to take a practical quiz.ġ.These undifferentiated cells undergo mitosis at a regular interval as the embryo increases in number of cells and complexity. Whole mounts of whitefish blastula will illustrate reproductive cells in animals.
Longitudinal sections of the root of Allium, will be used to examine the cells in the root meristem, the growing region of the root.Today you will use prepared slides to investigate the phases of mitosis in both plants and animals.