better oogenesis

• at the start of oogenesis what cells start oogenesis

  cells of the germinal epithelium
• what happens to the germinal epithelium at the start of oogenesis

  they divide by mitosis to make diploid oogonia (as well as more germinal epithelial cells)
• what process will be used to convert the germinal epithelial cells into diploid oogonia

  mitosis
• what will happen to the diploid oogonia once it has been produced

  it will undergo mitosis many times to form primary oocytes(and more oogonia)
• what process is diploid oogonia divided by to get primary oocytes

  mitosis
• during oogenesis what will happen to the primary oocytes once they are formed

  they will start meiosis 1
• at which stage of meiosis 1 will the primary oocytes be arrested at

  prophase 1
• in oogenesis there are two sections , one that takes place before birth and one that takes place after puberty . what three stages of egg production take place before birth

  germinal epithelial cells , diploid oogonia and primary oocytes
• in the stages that take place before the birth of the baby girl what will be produced

  millions of primary oocytes that are arrested at prophase 1
• what is meant by the primary oocytes being arrested at prophase 1

  the primary oocytes will be held there until puberty
• why are primary oocytes held until puberty


  this is where the girl will have developed and started her period
• where are the primary oocytes that are held during prophase 1 of meiosis held

  in the ovaries
• after puberty is reached what will happen to the primary oocytes that are being held in the ovaires

  each month one of the primary oocytes will mature before ovulation
• what is the maturation of the primacy oocytes before ovulation also known as

  the completion of the first meiotic division
• what will the completion of the first meiotic division(maturation of primary oocytes before ovulation) lead to the formation of

  a haploid secondary oocyte and a polar body
• what will happen to the haploid secondary oocyte once it is produced(what will start meiosis 2)


  it will be released from the ovary during ovulation
• what does the releasing of the secondary oocyte from the ovary during ovulation indicate

  the start of meiosis 2
• what will happen after meiosis 2 starts

  the whole process will stop at metaphase 2 until fertilisation takes place
• what is formed from the secondary oocyte during meiosis 2

  a large ovum and a secondary polar body
• what happens to teh polar bodies produced

  they will degenerate