A cytosine DNA nucleotide will complementary base pair with which RNA nucleotide? 单项选择题

A

Cytosine

B

Uracil

C

Thymine

D

Guanine

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Two complementary nucleotides are connected by a _______ bond

A cytosine DNA nucleotide will complementary base pair with which RNA nucleotide? 

Question at position 3 What does DNA replication, template-based DNA repair, transcription, translation, microRNA regulation of mRNA, and PCR have in common?They all use complimentary base-pairing to transfer informationThey all use single stranded DNA as a template to copy the informationThey all take place in the nucleus of the cellThey all use energy in the form of dideoxy adenosine triphospate nucleotides (ddATPs) to drive the copying of genetic information. Clear my selection

Erwin Chargaff investigated the nucleotide composition of DNA. He analyzed DNA from various organisms and measured the relative amounts of adenine (A), guanine (G), cytosine (C), and thymine (T) present in the DNA of each organism. Table 1 contains a selected data set of his results. Table 1. Nucleotide composition of selected organismsample DNA from Organism %A %G %C %T %(G+C) %(A+T) Octopus 33.2 17.6 17.6 31.6 35.2 64.8 Chicken 28.0 22.0 21.6 28.4 43.7 56.4 Rat 28.6 21.4 20.5 28.4 42.9 56.0 Grasshopper 29.3 20.5 20.7 29.3 41.2 58.6 Wheat 27.3 22.7 22.8 27.1 45.5 54.4 Which of the following statements best explains the data set?

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