In an experiment, knockout mice without the ability to taste sweetness were conditioned over a period of six days. On the first day, they were allowed to sip from a sugar-water spout placed on one side of the chamber. On the second day, they were allowed to sip from a plain-water spout placed on the other side of the chamber. After the six days of conditioning, both spouts were made available again. The spouts delivered only plain water. The mice exhibited a strong preference for the spout that had previously delivered the sugar water. This implies that the mice had:

Question

Quizplus · Accepted Answer

The mice demonstrated a learned behavior by associating the location of the sugar water with a positive experience, even though they could not taste sweetness. This implies they learned to recognize and prefer the location where they previously accessed the more nutritious sugar water, despite both spouts delivering plain water during the test.

In an Experiment, Knockout Mice Without the Ability to Taste