38. For an individual A to help his relative B or C, the fitness benefits and costs are 50 and 20 units, respectively. However, following Hamilton’s Rule, A should help […]
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CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Hamilton’s Rule in Action: When Should Altruism Be Directed Toward Relatives?
Assume that in terms of ‘genetic fitness’ the ‘benefit’ of performing an altruistic act to a relative is 500 units and the ‘cost’ involved is 150 units. Following Hamilton’s Rule […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Genetic Relatedness: Comparing Offspring-Parent and Sibling Relationships
The degree of genetic relatedness between the offspring and their parents is (1) higher than that between sister and brother. (2) lower than that between sister and brother. (3) the […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Hamilton’s Rule and Altruism: When Should Half-Siblings Help Each Other?
Brothers A and B have the same father but different mothers. B wants A to help him, which involves both benefits (b) and costs (c) for A. If A incurs […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Applying Hamilton’s Rule: When Should Altruism Evolve Between Relatives?
Individual A can derive fitness benefit of 160 units by helping Individual B, but incurs a fitness cost of 50 units in doing so following Hamilton’s rule, A should help […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Kin Selection Theory: How Altruism Spreads Through Direct and Indirect Fitness
Based on the theory of kin selection, choose the correct statement: (1) A gene for altruism will spread in the population if the act of altruism increases the actor’s gene […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Hamilton’s Rule: The Evolutionary Formula Explaining Altruism in Nature
The idea that an altruistic gene will be favored if r>C/B, where r is the coefficient of relatedness, B is the benefit to the recipient of the altriusm, and c […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Understanding Relatedness in Hamilton’s Rule: Who Benefits from Altruism?
According to Hamilton’s rule, altruistic behaviour can evolve when rb>c, where b is the extra benefit gained by the recipient as a result of the altruistic act, c is the […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Hamilton’s Rule: The Mathematical Relationship Behind the Evolution of Altruistic Behavior
According to Hamilton’s rule, ‘r’ is the coefficient of relatedness between two interacting individuals, ‘B’ is the benefit to the recipient and ‘C’ is the cost of the donor. Which […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Hamilton’s Rule and Kin Selection: The Mathematical Condition for Altruism to Evolve
In an altruistic act, if a donor sacrifices ‘C’ offspring which helps the recipient to gain ‘B’ offspring and the donor is related to the recipient by a coefficient γ, […]
