Imagine that one of the original four mice that escape from a research lab is blind due to a genetic defect. If the mice breed and most of the mice born in subsequent generations are blind from birth, this is most likely a case of:

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The blind mice are likely to pass on the genetic defect to their offspring, resulting in a high proportion of blind mice in subsequent generations. This is an example of the founder effect, where a small group of individuals (in this case, the four original mice) start a new population that is genetically distinct from the original population. As a result, the frequency of certain alleles (like the genetic defect that causes blindness) may be different in the new population, and over time, those alleles may become more common due to genetic drift.

Imagine That One of the Original Four Mice That Escape