Multiple Choice
Which part of the DNA molecule is most directly associated with the coding of genetic information?
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7. DNA and Chromosome Structure
DNA Structure
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
The DNA molecule is usually found in which structural form in cells?
A
B-form double helix
B
Single-stranded linear
C
Z-form double helix
D
A-form double helix
Verified step by step guidance1
Understand that DNA can adopt several structural conformations, including A-form, B-form, and Z-form double helices, as well as single-stranded forms.
Recall that the B-form double helix is the most common and biologically relevant structure of DNA under physiological conditions in cells.
Recognize that the A-form double helix is typically found in dehydrated samples or RNA-DNA hybrids, not usually in normal cellular DNA.
Know that the Z-form double helix is a left-handed helix and occurs under certain conditions but is rare in cells.
Conclude that the DNA molecule in cells is predominantly found in the B-form double helix structure.
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