Which mechanism of evolution occurs due to changes in a population from random events?
What mechanism of evolution involves changes in the DNA sequence?
How does gene flow act as a mechanism of evolution?
In a small island ecosystem, two populations of butterflies exist: the Blue Monarchs and the Green Monarchs. These populations have been separated for several generations. Recently, a storm caused a significant portion of the island to flood, allowing the two populations to intermingle for the first time. After the storm, researchers observed a mix of traits in the butterflies, such as coloration and wing patterns, that were not present in either population before the flooding.
What is the most likely consequence of this event on the butterfly populations?
In a population of fruit flies, a spontaneous mutation occurs in some individuals that results in a new wing shape: instead of the usual long and narrow wings, these flies have short, rounded wings. Researchers study the population over several generations and find that the short-winged flies have a lower survival rate due to their reduced ability to fly effectively and escape from predators. However, some of the offspring of these short-winged flies inherit the mutation.
What is the most likely outcome for the short-winged flies in this population over time?