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In DNA, thymine always pairs with (cytosine / guanine / adenine) and cytosine always pairs with (adenine / guanine / thymine) by forming (hydrogen bonds / covalent bonds / ionic bonds) across complementary strands

User Sasjaq
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Answer:

Thymine pairs with Adenine

Cytosine pairs with Guanine

Hydrogen bonds

Step-by-step explanation:

User Dherik
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Answer:

The answer is Hydrogen bonds

Hope this helps

User Mortimer
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