mitosis - Cell reproduction requires a cell to divide into...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Cell reproduction requires a cell to divide into 2 exact replicas. It has to re-organize its nucleus and cytoplasmic structure. Why do cells divide? Replacement of worn out or injured cells (repairing wounds, replacing skin post sun burn peels, liver damage d/t alcohol) Growth of the organism requires new cells Reproduction Mitosis is the process by which the body makes new cells for replacement or growth. (Meiosis is the procedure for reproduction). In Mitosis, the cell will 1 st double its DNA, then divide into 2 new cells, resulting in a complete set of genes (chromosomes) passed on to the daughter cells (new cells). Mitosis is divided into 5 stages: (Students follow along on pg. 29-lab manual) 1. Interphase: In between cycles. DNA is copying. Chromosomes (which are a threadlike structure in the cell’s nucleus made of DNA) must be replicated. Before interphase you have 1 copy of each chromosome, after replication you have 2 chromatids held together by a centromere. The 2 chromatids are still referred to as 1 chromosome because they are a homologous pair. Homologous
Image of page 1
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