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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weak van der Waals forces
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covalent bonds
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hydrogen bonds
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a and b
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Detailed explanation-1: -There are four types of nitrogenous bases in DNA, i.e Guanine, Cytosine, Adenine, and Thymine. The complementary base pairs of guanine with cytosine and adenine with thymine connect to one another by hydrogen bonds. The hydrogen bonds between complementary nucleotides keep the two strands of DNA helix together.
Detailed explanation-2: -The two strands are connected by chemical bonds between the bases: adenine bonds with thymine, and cytosine bonds with guanine.
Detailed explanation-3: -The 2 strands of DNA are held together by hydrogen bonds between N2 bases.
Detailed explanation-4: -Answer and Explanation: The two strands of a DNA molecule are held together by hydrogen bonds between their base pairs. The base pairs refer to the nitrogenous bases found in the interior of DNA: adenine, cytosine, guanine, and thymine.
Detailed explanation-5: -Each DNA molecule consists of two nucleotide chains wrapped around each other in a double helix and held together by hydrogen bonds. This hydrogen bonding involves only the nitrogenous bases.