Lecture - Sep 14

Lecture - Sep 14 - Biology 9/14/09 The fazes of mitosis...

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

View Full Document Right Arrow Icon
Biology 9/14/09 The fazes of mitosis Interphase is not part of mitosis, but it is part of the cell. Prophase we talk about the cell as if it is a globe, with poles. the nucleolus will go away. The chromosome became a double structure length wise Their structure becomes evident. Chromosomes become shorter and thicker with a much more evident structure Chromosomes are made of chromatin + protein Sister chromatids. They have a centromere region, where sister chromatids adhere to one another They use a specific kind of glue that is sometimes sticky, and other times not. The kinetochores forms at the centromere and it binds to microtubules. A duplicated Chromosome - consists of a pair of sister chromatids containing identical DNA sequences - Sister centromeres - constricted regions - join sister chromatids to each other - sister kinetochores - each is a protein structure to which microtubules bind Metaphase - chromosomes align on cell’s midplane (metaphase plane) - mitotic spindle is complete - microtubules attach kinetochores of sister chromatids to opposite poles of cell Metaphase Each chromatid has its own kinetochore. what’s a microtubule organizing center (MTOC)? what kinds of cells have MTOC? Animal cells have centrioles. They are at each pole.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/03/2009 for the course BIO 01-119-10 taught by Professor D'arville during the Fall '09 term at Rutgers.

Page1 / 4

Lecture - Sep 14 - Biology 9/14/09 The fazes of mitosis...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online