What is the Function of Polar Bodies?

In summary, the conversation discusses the functions of polar bodies in genetics and whether there is a mechanism for determining which cell becomes a polar body. Some posts are suggested for further information on the topic. The lecture also mentions a potential function of the second polar body in embryo cleavage.
  • #1
gamze
16
0
hi

our genetics teacher has asked us about possible functions of polar bodies (if they are unfunctional, why do not they fully disappear but limit their smallness in some way; etc) and I could only find some diagnostic usages of polar bodies and that their nuclei could be inserted into enucleated eggs to produce viable zygotes.

I also wonder if there is any mechanism for determining which of the cells will become the polar body or if it's completely random.

does anybody know anything about this subject?
 
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  • #3
thanks a lot
in our lecture we discussed some functions of polar bodies. an interesting one was that second polar body may be required for cleavage of the embryo(creating the polarity of it)
 
  • #4
cool, I didn't know that!
 

1. What are polar bodies?

Polar bodies are small, non-functional cells that are produced during the process of meiosis in female organisms. They are created through the division of the primary oocyte and contain half of the genetic material of the original cell.

2. What is the function of polar bodies?

The main function of polar bodies is to ensure that the resulting egg cell after meiosis has the correct number of chromosomes. By removing half of the genetic material, polar bodies help maintain the balance of chromosomes in the egg cell.

3. Do all organisms produce polar bodies?

No, polar bodies are only produced in female organisms that undergo meiosis. In some species, such as mammals, polar bodies are only produced in a few cells while in others, such as insects, polar bodies are produced in all cells.

4. Can polar bodies be fertilized?

No, polar bodies are not capable of fertilization as they do not contain all of the genetic material needed for a zygote to develop. They are essentially discarded cells that do not contribute to the formation of an embryo.

5. Do polar bodies have any other functions?

While the main function of polar bodies is to assist in the production of a healthy egg cell, some studies suggest that they may also play a role in regulating gene expression and maintaining the health of the egg cell. However, more research is needed to fully understand the potential functions of polar bodies.

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