Presentation
Onion root tip cell
- Course
- Institution
Its a ppt showing mitosis in onion root tip cells
[Show more]
Seller
Follow
sonambanbhatt1
Content preview
Onion Root Tip Analysis LabStages of Mitosis
Introduction:
Mitosis, also called is division of the nucleus and its chromosomes. It is followed by division of the cytoplasm known as
cytokinesis. Both mitosis and cytokinesis are parts of the life of a cell called the Cell Cycle. Most of the life of a cell is spent in a non-
dividing phase called Interphase. Interphase includes G1 stage in which the newly divided cells grow in size, S stage in which the
number of chromosomes is doubled and appear as chromatin, and G2 stage where the cell makes the enzymes & other cellular
materials needed for mitosis.
Mitosis has 4 major stages --- Prophase, Metaphase, Anaphase, and Telophase. When a living organism needs new cells to repair
damage, grow, or just maintain its condition, cells undergo mitosis.
During Prophase, the DNA and proteins start to condense. The two centrioles move toward the opposite end of the cell in animals or
microtubules are assembled in plants to form a spindle. The nuclear envelope and nucleolus also start to break up.
Prophase
During Metaphase, the spindle apparatus attaches to sister chromatids of each chromosome. All the chromosomes are line up at the
equator of the spindle. They are now in their most tightly condensed form.
Metaphase
During Anaphase, the spindle fibers attached to the two sister chromatids of each chromosome contract and separate chromosomes
which move to opposite poles of the cell.
Anaphase
In Telophase, as the 2 new cells pinch in half (animal cells) or a cell plate forms (plant cells), the chromosomes become less
condensed again and reappear as chromatin. New membrane forms nuclear envelopes and the nucleolus is reformed.
Telophase
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller sonambanbhatt1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now