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Chapter 13

컨트롤 버튼이 '내비게이션' 모드로 변경되었습니다.
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이 집합의 용어 (16)

  • Asexual Reproduction

    One individual passes down all of its genes to its off spring

  • Karyotype

    ordered display of the pairs of chromosomes from a cell

  • How much chromosome pairs do autosomes have

    22

    23- sex chromosomes XY

  • Chiasmata

    Exact location for crossing over between two chromosomes ( prophase 1 )

  • Pairing of homologous chromosomes during Meiosis

    Synapsis

  • The process that halfs chromosomal #

    Meiosis 1 - 2n to n

  • Prophase 1

    • Cross over happens at the chaismata between non-sister cromatids

  • Genetic Variations

    • crossing over

    • independent assortment

    • random fertilization

  • Metaphase 1

    • chromosomes line up PAIR by PAIR at the center

    • microtubles attach to kinetochores

  • Telephase 1

    • Two daughter cells form

    • Haploid cells

    • One homolog

  • What splits up during Meiosis 2

    Sister cromatins

  • Metaphas 2

    Chromosomes line up at metaphase plate

  • Telophase 2

    4 haploid daughter cells are formed : sex gametes

    Each cell is unique

  • Mitosis ...... the # of chromosomes, while meiosis ....... # of chromosomes

    Conserves: Halfs

  • The mitochondrial DNA is inherited ....

    Maternaly, the egg contributes all cytoplasm to the zygote

  • Non-disjunciton results in

    cells with incorrect number of chromosomes