Biology

Biology

Mitosis
1. The type of cell division that can make plant and animals grow
2. Parent cells produce daughter cells
3. At the end two daugher cells are made which are genetically identical
4. Mitosis is a way damaged cells are replaced
Meiosis
1. 4 genetically different daughter cells are produced
2. In meiosis swapping sections of DNA takes place
3. There are 2 stages of division
Stem cells
1. Stem cells are specialised cells
  1. They can turn into any type of cell found in the body
    1. Can be found in a developing embryo
      1. Can come from adults too
        However, the ones that come from adults can turn into many cells not all types of cells
      2. Can come from bone marrow and developing teeth
2. There are some ethical concerns
  1. Human life should not be dreated for human purposes
3. Used for medical purposes
  1. currently being used to treat over 80 diseases
Embryo screening
1. An embryo is an organism in its early stages of develpoment
2. Allele is a version of a gene
3. Embryo screening means checking to see if it aryying any alleles for a genetic disease
4. If the embryo was carrying the disease the parent would have to decide if they want to keep it or not
5. Advantages
  1. more chance of developing a healthy child
    1. the expence if the disease will not be there
6. Disadvantages
  1. The cost is extremely high
  2. Dangers are always present such as infection through disease

Resource summary

	Created by foodlover_321 about 9 years ago