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53. Which of the followings would a paleontologist be most likely to do in order to determine whether a fossil represents a reptile or a mammal?
(A) Look for the mammalian characteristics of a four-chambered heart and a diaphragm.
(B) Because mammals are eutherians, look for evidence of a placenta.
(C) Use molecular analysis to look for the protein keratin.
(D) Examine the teeth.
(E) Look for the presence of milk-producing glands.


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 【站僕】摩檸Morning:有沒有達人來解釋一下?
倒數 1天 ,已有 2 則答案
黃冠慈 國二下 (2021/03/19):

牙齒才可透過化石的方式保存下來

3個讚
檢舉
Misa 大一上 (2021/03/23):

牙齒可以被保留下來

為了確定化石是爬行動物還是哺乳動物,古生物學家最可能採取以下哪項操作?

(A)尋找四腔心臟和隔膜的哺乳動物特徵。

(B)因為哺乳動物是真人動物,所以要尋找胎盤的證據。

(C)使用分子分析來尋找蛋白質角蛋白。

(D)檢查牙齒

(E)尋找產奶腺的存在。

3個讚
檢舉


53. Which of the followings would a pale..-阿摩線上測驗