Class Notes (834,141)
Canada (508,370)
BIOL 1000 (60)
Lecture 31

BIOL 1000 Lecture 31: Lecture 31

3 Pages
Unlock Document

Biological Sciences
BIOL 1000
Kevin G.Scott

o|82 o Cytokinesis – begins before mitosis ends, cytoplasm is divided in 2 Combination of 2 phases produces 2 genetically identical daughter cells  Only eukaryotes go through mitosis Errors occur only 1/100000 cell divisions Cell division is a continuum of dynamic changes 5 main stages of mitosis: Prophase, prometaphase, metaphase, anaphase, telophase Usually but not always followed by cell division (cytokinesis) Mitotic spindle = a football-shaped structure of microtubules that guides the separation of the 2 sets of daughter chromosomes  Spindle microtubules emerge from 2 centrosomes (“microtubule organizing centres”) = clouds of cytoplasmic material that contain 2 pairs of centrioles Interphase Period of cell growth, cell synthesizes new molecules/organelles By G c2ll has doubled its contents and cytoplasm contains 2 centrosomes, each centrosome with a pair of centrioles Chromosomes are duplicated inside nucleus Still in form of chromatin Prophase Changes occur in nucleus and cytoplasm Chromatin becomes tightly coiled in nucleus, forming discrete chromosomes (can be seen with light microscope) Each duplicated chromosome appears
More Less

Related notes for BIOL 1000

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.