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The Cellular Basis of Reproduction and Inheritance

Life cycle. Sequence of life forms from one generation to the nextTwo stages1: development2: reproduction. Reproduction. SexualPassing traits from two parents to next generationAsexualPassing traits from one parent to next generationGenomeComplete set of heritable materialMost cells carry t

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The Cellular Basis of Reproduction and Inheritance

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    1. The Cellular Basis of Reproduction and Inheritance Chapter 8 Chapter 27

    2. Life cycle Sequence of life forms from one generation to the next Two stages 1: development 2: reproduction

    3. Reproduction Sexual Passing traits from two parents to next generation Asexual Passing traits from one parent to next generation Genome Complete set of heritable material Most cells carry two complete sets Sexual reproducing cells carry one set

    4. “Like Begets Like” Single-celled organisms Amoebas Asexual reproduction Daughter cell has identical copy of parent gene Multicellular organisms Not genetically identical to parent Unique combination of parent’s traits

    5. Breeding Domestic animals and plants Manipulation of sexual reproduction For desired traits Reduce population variability Charles Darwin data for Natural Selection theory

    6. Cells Arise from Cells Rudolf Virchow 1858 Cell reproduction = Cell division Enables fertilized egg to develop Embryo to adult organism Replace dead cells Ensures continuity of generations Basis of asexual and sexual reproduction

    7. Prokaryotes Genes carried on circular DNA molecule Minimal packaging DNA is attached to plasma membrane Non-membrane-bound DNA in nucleoid Binary fission Cell division used for reproduction

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