Chapter 11 (2)

Chapter 11 (2) - Chapter 11 10/16/09 Types of cellular...

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Chapter 11 10/16/09 Types of cellular reproduction Binary fission-prokaryotes Mitosis-eukaryotes o Development; growth; maintenance; repair o Asexual reproduction Meiosis-eukaryotes o Sexual reproduction-making gametes Binary fission ( fig. 11-2) DNA is attached to plasma membrane DNA replicates Bacterium grows, pushing chromosomes apart Plasma membrane pinches in at middle Parent divides into 2 daughter cells Two types of cell division in eukaryotes Mitosis o Cell division producing genetically identical daughter cells that are clones of the parent cell Meiosis o Cell division that produces gametes; eggs and sperm Functions of mitosis Growth and development o Mitotic cell division o Mitotic cell division and cellular differentiation o Repair and maintenance Functions of mitosis Asexual reproduction o Plants o Fungi o Protists o Animals Which of the following is NOT a function of mitosis in a multicellular organism? Production of gametes. Chromosome structure (fig. 11-5) Chromosome = DNA + Proteins DNA wrapped around histones o Helps organize DNA DNA and proteins arranged as a cylindrical fiber Chromosomes are replicated prior to cellular division
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Chapter 11 (2) - Chapter 11 10/16/09 Types of cellular...

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