bio lecture notes 4

bio lecture notes 4 - PLOIDY Chromosomes that carry genes...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
PLOIDY Chromosomes that carry genes for the same traits (eye color, hair color etc.) are the same length and have their centromere in the same location. These chromosomes are called homologues, or a homologous pair. Haploid diploid tetraploid . Homologous Chromosomes: Chomosomes containig the same genes MEIOSIS: Meiosis results in haploid nuclei being formed from diploid nuclei. Often called a "reductional division" Typically during sexual reproduction in a diploid organism two haploid cells fuse restoring the diploid condition. In an organism each of the haploid cells must contain one chromosome from each chromosome pair, otherwise the resulting cell would be missing some genes. Meiosis also consists of 2 separate divisions Meiosis I Meiosis II Phases of Meiosis: As I go through this process pay attention to how the process produces haploid nuclei and divides the chromosomes such that each resulting cell has one chromosome from each pair. Prophase I: Synapsis tetrad . Crossing-over Metaphase I: Anaphase I:
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Telophase I: Cytokinesis: Segregation : Homologues separate into different cells * Independent Assortment
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern