Which type of mutation adds one or more base pairs?

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

When rutherford performed his metal foil experiment, he was surprised that most of the alpha particles