EMBRYOLOGY
CHROMOSOMES AND CELL DIVISIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chromatin refers to DNA that is ____
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old and needs to be dissolved.
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completely unwound and ready for replication.
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tightly bound into chromosome-like structures.
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relaxed like a bowl of spaghetti.
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Explanation:
Detailed explanation-1: -In electron micrographs, eukaryotic interphase chromatin appears much like a plate of spaghetti-in other words, there is no obvious pattern of organization.
Detailed explanation-2: -Relaxed or “open” chromatin, also known as euchromatin, allows transcription factors more access to promoter sites, thereby facilitating transcriptional activation. In contrast, more densely packed heterochromatin conceals DNA promoter sequences from transcription factors.
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