Mutant Fruit Flies That Make Only One Antimicrobial Peptide (Defensin

question 52

Multiple Choice

Mutant fruit flies that make only one antimicrobial peptide (defensin or drosomycin) were tested for survival after infection with Neurospora crassa fungi or with Micrococcus luteus bacteria, and the results are shown in Figures 35.1 and 35.2.
Figure 35.1 Figure 35.2
The results shown in the graphs in Figures 35.1 and 35.2 support the hypothesis that

• A) adding the defensin gene to such mutants exacerbates fungal infections.
• B) adding the drosomycin gene to such mutants protects them 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.
• E) even the wild-type flies rarely, if ever, survive for five days.

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Definitions:

Full Moon

The lunar phase when the Moon appears fully illuminated from Earth's perspective, occurring when the Earth is located directly between the Sun and the Moon.

Random Sampling

A method of sampling that gives every member of a population an equal chance of being selected, ensuring the sample is representative of the entire population.

Blind Group Assignment

A method used in experiments where participants are randomly assigned to groups without knowing which group (e.g., experimental or control) they are in to reduce bias.

Random Group Assignment

A method used in experiments where participants are randomly assigned to different groups to ensure that each group has a similar composition at the start of the experiment.