Fruit Flies Normally Produce Two Types of Antimicrobial Peptides (Defensin

Multiple Choice

Fruit flies normally produce two types of antimicrobial peptides (defensin and drosomycin) .Mutant fruit flies were generated that produced no antimicrobial peptides,defensin only,or drosomycin only.Wild-type flies and the mutant flies were then tested for survival after infection with Neurospora crassa fungi or with Micrococcus luteus bacteria.The results are shown in Figures 35.1 and 35.2. Figure 35.1
Figure 35.2
The results shown in Figures 35.1 and 35.2 support the hypothesis that

A) the defensin gene exacerbates fungal infections in flies.
B) the drosomycin gene protects flies from bacterial infection.
C) wild-type flies with the full set of genes for antimicrobial peptides are highly susceptible to these infective agents.
D) the presence of any single antimicrobial peptide protects against both infective agents.