The graph below depicts the change in frequency for an advantageous allele in two different populations, both of infinite size. The strength of selection is the same in both populations. 
(a) What type of allele is this? Explain how you know.
(b) Why does the frequency of the allele in one of the populations rise faster than the frequency in the other population?
(c) If given enough time, will the allele become fixed in each of these populations?
Definitions:
Unilineal Descent
A system of tracing descent through only one parent, either the mother (matrilineal) or the father (patrilineal), which can determine group membership and inheritance.
Clans And Lineages
Social groups based on kinship and descent, where clans are large kin groups that claim a common ancestor, and lineages are smaller, proving descent from a common ancestor.
Kinship System
The pattern of social relationships and roles within a culture that are determined by blood relationship (consanguinity) and marriage (affinity).
Sudanese
Pertaining to Sudan, its people, culture, or languages; can also refer to specific ethnic classification systems in anthropology.
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