DNA is a large molecule made from two chains of nucleotides held together by cross-links between pairs of bases.
Which of the following is a correct base pair?
T with C
G with A
C with G
C with A
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DNA is a large molecule made from two chains of nucleotides held together by cross-links between pairs of bases.
Which of the following is a correct base pair?
T with C
G with A
C with G
C with A
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Which shows the correct size order of structures, starting with the smallest?
Gene →  DNA strand →  chromosomes →  nucleus
DNA strand →  chromosome →  gene → nucleus
Chromosome → gene → DNA strand → nucleus
Nucleus → chromosome → DNA strand → gene
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A strand of DNA is shown below:
T ― G ― A ― A ― C ― T ― A ― G ― C ― C
Which of the following shows the correct order of bases on the complementary strand of DNA?
A ― C ― T ― T ― A ― A ― T ― C ― G ― G
C ― A ― G ― G ― T ― C ― G ― A ― T ― T
T ― G ― A ― A ― C ― T ― A ― G ― C ― C
A ― C ― T ― T― G ― A ― T ― C ― G ― G
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