If group selection—the differential survival and reproduction of groups—is an evolutionarily stable strategy, then:
a) the characteristics of the group must be heritable
b) groups are only formed by related individuals
c) family members of groups behave altruistically to one another but not to unrelated members of the group
d) a small portion of the group must sacrifice their own fitness for the good of the group

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

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organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.