Artificial cloning in Animals
- Created by: mutsa__
- Created on: 15-02-17 12:38
Fullscreen
Introduction:
- There are some inverterbrae species which clone naturally
- They have cells which are totipotent - cells that divide and differenciate into all types of cell found in the adult species/ organism
- An example of this cell is an embryo in animals
Reproductive cloning:
- This is particularly for animals that are:
- Genetically modified and have an usual characteristic, for example goats producing spider milk or cows which produce less methane
- Elite farm animals produced by selective breeding or genetic modification (embryo twinning)
- There are two methods used in reproductive cloning
- Embryo twinning
- This is used when many genetically identical copie of an animal with a desirable characteristic are required
- Somatic cell nuclear transfer (SCNT)
- Used when an animal genetically identical to an existing animal is required
- Embryo twinning
Embryo twinning:
1. Eggs and sperm are collected and by in vitro fertilisation they are fertilised and a zygote is created
2. Zygote divides by mitosis forming a cluster/ ball of cells
3. Cells separate and are left to continue dividing
4. A small mass of cells are placed into uterus…
Comments
No comments have yet been made