why doesn't have give rise to harmless parasites? what are prions and what is their genetic material
Asked by upmaniousagarika | 25th Jun, 2016, 06:07: PM
A parasite in some way or other harms the host. An immune response is mounted against it as it is identified as foreign. The presence of the pathogenic components in host and the components generated as a result of immune response harms the host.The parasite cannot evolve in order to overcome it's pathogenicity because immune system targets such components of pathogen which are extremely important for its survival. But there are exceptions like commensalism in which a particular organism doesn't harm the host but stays there having no harmful effect on host. It might be possible that its evolution led to the tolerance of the immune system.
Prion is an infectious agent that comprises of protein material.It is also called proteinaceous infectious particle. They do not have any genetic material.
Answered by Sivanand Patnaik | 26th Jun, 2016, 09:09: AM
- role of a human being in biodiversity conservation
- What is EI Nino effect
- which of the following is not done in a wildlife sanctuary a. conservation of fauna b. conservation of flora c. prohibtion of hunting d. exploitation of soil and flora
- what is alpha,beta and gamaa diversity?
- one of the endangered species of indian medicinal plant is that of whom? => nepenthes, podophyllum,garlic or ocimum?
- What is the function of National Bureau of Plant Animal and Fish Genetic Resources?
- What is cryopreservation? Write the importance of cryopreservation in conservation of biodiversity.
- Name the Indian hotspots that extend into other countries.
- What are seed banks?
- What are endangered species? How many animals and plants are endangered in India?
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number