Question

11. 8. Consider the following pay-off matrix for social and solitary Solitary Social individuals. Social individuals clump with any other individual Solitary 69 around, regardless of whether the other individual is social or not. Social 57 The numbers represent the payoff to the focal individual who is defined by the row label. What strategy would a rational player adopt? a. Social b. A rational player should choose to be social only some of the time. C. A rational player should choose the least common strategy. d. Solitary 9. Consider the same pay-off matrix. Which statement is consistent with your understanding of how social strategies evolve? a. The fitness of social pairs is higher than that of pairs of solitary individuals (7 vs 6), which is why rational players choose to be social. b. Each individual acts in their own best interest and therefore receives the highest payoff of 9. c. Even when players choose the best response to improve their direct fitness they do not always receive the highest fitness possible. d. The outcome can be determined by considering only the payoffs when the other player is solitary. 10. An explanation for the evolution of anisogamy in the ancestors of animals is a. Small sperm were better able to find other gametes b. Large eggs contributed to zygote survival c. The rarer gamete type would have had an advantage d. All of the above e. None of the above 11. Male house crickets deposit a spermatophore during mating. The male guards the female while the spermatophore transfers sperm over the next half hour or so. Body size is heritable and larger females lay more eggs. When male crickets are experimentally removed immediately following mating females adjust the amount of time that the spermatophore remains in place. Which observation is consistent with the hypothesis that this is a form of female choice? a. Younger females leave the spermatophore in place longer b. Females in poor condition leave the spermatophore in place longer c. Females that have mated with larger than average males leave the spermatophore in place longer d. Females that have mated with smaller than average males leave the spermatophore in place longer

Answer 1

Answer 8:

Option (b) a rational player should chosse to be social at some times.

Answer 9:

Option (b.) Each individual acts in their own way of interest amd thus recieved the highest payoff 9

Answer 10:

Option (d.)all of the above

The evolution of anisogamy in animals is of utmost importance because gametes evolved for better survivability of the offsprings.

The differed in size and motility mainly . The male gametes , viz, sperms are available in huge counts across the animal kingdom. While , the female gametes or ova remains less available in nature .