This is referred to as allopatric speciation where species are separated geographically and evolve into two different species over time
Option A. is correct.
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Answer:
Disaccharides: Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond. In the process, a water molecule is lost. ... In sucrose, a glycosidic linkage is formed between carbon 1 in glucose and carbon 2 in fructose.