Concept explainers
Interpretation:
The behavior of the normal nematodes and the transgenic nematodes in presence of attractant should be determined.
Concept introduction:
The olfaction can be defined as the sense of smell. The sense of olfaction depends on the different chemicals and its binding to the corresponding neural receptors, generating a neural sensation in animals.

Answer to Problem 1P
The transgenic nematode would avoid the attractant and the normal nematode will be attracted to it.
Explanation of Solution
Given:
The neuron AWA express receptors, to which the normal nematodes are attracted. Another neuron AWB express receptors, which is avoided by nematodes. A transgenic nematode is made, in which the receptors for the attractant is produced by AWB, not AWA.
Explanation:
In the case of normal nematodes, the attractant molecules would excite the AWA, so they would be attracted. In the case of transgenic nematodes, the attractants would produce an opposite response, as the receptors for the attractants would be AWB. The message transcribed the AWB neuron would generate a message that this substance should be avoided. So, the behavior of the nematodes would be avoiding attractant.
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Chapter 34 Solutions
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