How man can benefit from transgenic animals ?
Give at least 5 points.
Answers
The benefits of these animals to human welfare can be grouped into areas:
Agriculture
Medicine
Industry
The examples below are not intended to be complete but only to provide a sampling of the benefits.
1. Agricultural Applications
Transgenesis will allow larger herds with specific traits.
a) breeding
Farmers have always used selective breeding to produce animals that exhibit desired traits (e.g., increased milk production, high growth rate).11,15,17 Traditional breeding is a time-consuming, difficult task. When technology using molecular biology was developed, it became possible to develop traits in animals in a shorter time and with more precision. In addition, it offers the farmer an easy way to increase yields.
Scientists can improve the size of livestock genetically.
b) quality
Transgenic cows exist that produce more milk or milk with less lactose or cholesterol12, pigs and cattle that have more meat on them8,17, and sheep that grow more wool18. In the past, farmers used growth hormones to spur the development of animals but this technique was problematic, especially since residue of the hormones remained in the animal product.
Disease-resistant livestock is not a reality just yet.
c) disease resistance
Scientists are attempting to produce disease-resistant animals, such as influenza-resistant pigs, but a very limited number of genes are currently known to be responsible for resistance to diseases in farm animals.19
Answer....
1. to study normal physiology and development. for example study of complex factors involved in growth such as insulin-like growth factors.
2 . study of diseases transgenic animals can be used in understanding how genes contribute to the development of disease such as cancer, rheumatoid arthritis , etc.
3. in extraction of biological products like protein α -1- antitrypsin.
4. testing the safety of vaccines. transgenic mice are being used today to test the safety of vaccines before they are used on humans
5. testing of safety of chemicals . this is also known as toxicity testing.