Suppose an entire colony of lemmings is chased by a predator and most of them jump off a cliff and perish. Fortunately, a few of them don't jump and re-establish their colony (Re-established Colony) and a few of the jumpers land in the water, survive the fall and establish a second colony on a nearby island (Island Colony). Which of the following characterizes the type of change causing a reduction in the genetic variation that occurs in these 2 colonies?

since the re-established colony was created after the death of a large number of lemmings, it was a random event so it is a bottleneck effect. the surviving lemmings that jumped into water made their own, new population, which would be a founder effect

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shivjimishraVT shivjimishraVT · Answer 2 · 2022-03-30T08:49:42+02:00

The re-established colony is the result of the bottle-neck effect, while the island colony is the result of the founder effect. In both situations, there will be a reduction in genetic diversity.

What do you mean by Genetic variations?

Genetic variations may be defined as the presence of differences in the sequence of genes between individuals organisms of a species.

In an island colony, a founder effect may arise which states that a few individuals of lemmings from a population start a new population with a different allele frequency than the original population.

In the re-established colony, a genetic bottleneck changes the genetic variation, which develops when a population undergoes a drastic reduction in population size.

Therefore, the re-established colony is the result of the bottle-neck effect, while the island colony is the result of the founder effect.

To learn more about Genetic Drift, refer to the link:

https://brainly.com/question/1027688