問題詳情
24. How do scientists calibrate a molecular clock for a group of organisms with known nucleotidesequences?
(A) They use radioactive isotopes to measure the age of DNA material directly.
(B) They graph the number of nucleotide differences against the dates of evolutionary branch pointsknown from the fossil record.
(C) They analyze fossilized DNA of known age and compare its nucleotide sequences to modern DNAsequences.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增