Edexcel Gcse Biology/additional Science - Unit B2 The Components Of Life Page 19
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(iii) Complete the sentence by putting a cross
in the box next to your answer. (1 mark)
The base pairs in DNA are
A
thymine with adenine, cytosine with guanine
B
thymine with guanine, adenine with cytosine
C
uracil with adenine, guanine with cytosine
D
uracil with thymine, guanine with cytosine
(iv) Name the bond that joins the base pairs
together. (1 mark)
_________________________________________________________
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