Question

Do you believe that an ideal parasite should be able to 3 with him the host without harming it then why didn't natural selection lead to the evolution of such totally harmless parasites?

Answer 1

Answer:

No, an ideal parasite shouldn't be able to thrive without the host. The parasite not at all harms their host body but takes the advantages and profits from it to survive. They require certain substances that are available only in their host except them . And natural selection doesn't lead to the evolution of harmless parasites because then they will not be able to survive.

Answer 2

Explanation:

• No species is completely wipped out from nature. Evolution is a stochastic process based on chance events in nature.

1. By definition parasites need their hosts for various activities like for food,for shelter , for completing their life cycle etc.
2. Natural selection did not lead to such evolution because if the parasite become harmless then they show commensalism not parasitism.
3. Parasites does not survive after being harmless.
4. By the help of natural selection they evolve themselves to find other ways to infect host cells .
5. They cannot be totally harmless by evolution or by natural selection.