What affect will this have on the cockroach population in the building? ?

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dearxclementine

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Small cockroaches have a selective advantage over large cockroaches in a particular building. What affect will this have on the cockroach population in the building?

A. Allele frequencies will not change.
B. The frequencies of alleles causing large size will decrease.
C. The frequency of large cockroaches will increase.
D. The average size of a cockroach will not change.
E. The frequencies of alleles causing small size will decrease.
 
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