Q. What is 'Dictyostelium discoideum', recently seen in news?
Answer:
Amoeba
Notes: Scientists discovered that green-beard genes drive natural altruism in the amoeba Dictyostelium discoideum. These genes enable individuals to recognize and cooperate with each other, potentially causing harmful behavior towards those with different gene versions. Altruism in nature involves behavior where an animal acts in a way that may be harmful to itself but benefits others of its species.