part of the question: In women, the first division of meiosis produces one daughter cell that has almost all of the cytoplasm. The other daughter cell consists of a nucleus surrounded by a very small amount of cytoplasm and a cell-surface membrane. This very small daughter cell is called a polar body. Polar bodies do not usually divide. The same process occurs in the second division of meiosis, resulting in one egg cell and two polar bodies.
Mitochondrial diseases are caused by faulty mitochondria. All of a person’s mitochondria are inherited from their mother via the egg cell. An egg cell contains approximately 3 × 105 mitochondria.
One proposed treatment to prevent passing on faulty mitochondria involves
• removing the nucleus from an egg cell donated by a woman with healthy mitochondria
• replacing this nucleus with the contents of the polar body from a woman whose egg cells are affected by mitochondrial disease.
Suggest how this treatment prevents inheritance of mitochondrial diseases.
the answer: 1. Egg (created) has nucleus / DNA / genes of (affected) woman / mother;
2. It has mostly / many / lots of normal mitochondria (of unaffected woman)
OR
There are few faulty mitochondria;
i dont get this at all