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69. A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the following genes is absolutely conserved, which of the following would be the best choice on which to base the phylogeny?
(A) genes involved in eye-lens synthesis
(B) genes that cause radial body symmetry
(C) genes involved in chitin synthesis
(D) collagen genes
(E) beta-catenin genes


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 【站僕】摩檸Morning:有沒有達人來解釋一下?
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69. A researcher is trying to construct ..-阿摩線上測驗