GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The two antiparallel strands of nucleotides that form the DNA double helix are held together by ____
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ionic bonds between guanine and cytosine
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hydrogen bonds between nucleotide bases
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covalent bonds between nitrogen atoms in adenine and in thymine
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covalent bonds between carbon atoms in deoxyribose molecules
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Explanation:
Detailed explanation-1: -DNA is composed of two strands of nucleotides held together by hydrogen bonding.
Detailed explanation-2: -Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.
Detailed explanation-3: -The two strands are connected by chemical bonds between the bases: adenine bonds with thymine, and cytosine bonds with guanine.
Detailed explanation-4: -DNA is a double helical molecule made of two antiparallel strands of nucleotides which is linked by hydrogen bonds between complementary base pairs.
There is 1 question to complete.