Biology Final Study Guide - Biology Final Study Guide Cell...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology Final Study Guide Cell Division: -two main stages: interphase and division - Interphase: preparing for division (G = gap) - G 1 : duplicates everything (organelles) - S: synthesis—duplicate DNA (20 chromosomes) - G 2 : produce microtubules via protein tubulin - Division: - prophase: chromosomes start to condense (homologous start pairing up) - metaphase: chromosomes (2 homologous) line up at center; microtubules/spindle fibers attached - anaphase: chromosomes are pulled apart to polar regions (draw) Kineticore: protein layer on centromere where spindle fibers attach - telophase: chromosomes reach poles, and cell can divide (thus maintaining ploidy level) -bacteria divide via binary fission -plants divide via formation of a cell plate called a phragmoplast -animals divide via cleavage (lava lamp) - ploidy: chromosome number - polyploidy: major cause of speciatem in plants -mutation drives speciatem -2n = diploid ; 1n = haploid -sperm & egg haploid; combine to make diploid (DNA segregation maintains diploid vs.
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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