The answer to your question is D
Answer:
hope you like it
Explanation:
A molecular clock determines evolutionary relatedness by examining how many mutations or random changes in DNA, there are between two organisms. When we map the relatedness of different organisms, we are creating a phylogenetic tree. At some point, all organisms that are alive today shared a common ancestor.
To answer this we would the answer choices.
B. is a protective structure made of cellulose fibrils
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