本题目来源于试卷: Unity and Diversity A.4 Cell Structure，类别为 IB生物学
[单选题]
What provides evidence that a6d)z6(xfhtg3ncls hf 5;oac2lliv fxvc)/z4gg qse0 b:2 ga0 jtve91-.zpcbm0 life on Earth evolved from the same population ofmv scezg:vqjb/te 9x1b)4zvcifg0a .0 g20-p cells?
A. Eukaryotic cells evolved from prokaryotic cells.
B. Both mitochondria and prokaryotes have a cell wall.
C. Both eukaryotes and bacteria contain histones.
D. The genetic code is universal.
参考答案: D
本题详细解析:
All 64 codons of the genetic code are present in all organisms, apvqy*8o 0i-d ifart from minor variations indicating that all life evolved from the same original cells (Choice D).Eukaryotic cells evolved frof 80 yi*-qoivdm prokaryotic cells (Choice A) is incorrect as this is the endosymbiotic theory. Choice B is incorrect as mitochondria do not have a cell wall. Choice C is incorrect as bacteria do not have histones.
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