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Unit 5: Reproduction and Development

Explore the essential process of cell reproduction and its significance in the survival and evolution of living organisms. Discover the intricate phases of cell division and the role of mitosis and meiosis in producing new cells and genetic variation. Investigate the link between cancer and abnormal cell growth. Learn about the potential of stem cells for medical advancements.

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Unit 5: Reproduction and Development

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  1. Unit 5: Reproduction and Development Chapter 18: Cell Reproduction _________ & ___________

  2. A. Reproduction 1. _______________ - Life process by which living things _________ other living things of the _________________ - Not every _____________________ needs to reproduce - If the species is to survive then at least some individuals need to reproduce - Organisms pass on ____________________ to the next generation

  3. B. Cell Division - _______________________________ through cell division - cells must divide _________________________________ - cell division is a series of complex changes that leads to new cells – specific phases of cell division - new cells = __________________________

  4. 1. _________________________ - carry _________________ (______) - must be copied (__________) before any cell division starts - normally a cell has ____________________ (__) = ______ - chromosomes come in _______________ - humans have __________________ _____________________________ _____________________________ - different organisms have different numbers of chromosomes

  5. 2. Mitosis & Meiosis Mitosis Meiosis Used for: Produces: # of daughter Cells # of divisions: Chromosome #: Compare DNA:

  6. a. ________________________ process during ______ by which ________________________ _____________ and mix up the genetic information b. _______________________ process during meiosis by which _____________________ _________________________ - millions of possible chromosomal combinations Meiosis Variation

  7. 3. ___________________ - a group of diseases characterized by __________________ - “When Good Cells Go Bad!” - ______________ = group of cancer cells - ______________ = cancer cells break loose a spread through the body - Genetic and Environmental links to rates of cancer

  8. 3. __________________ - cells that have the ability to become ___________________ - all cells have the _________________________ - ________________________________________________ - once cells are specialized they can’t go back - use stem cells to ___________________________

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