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Question
State the difference between:
Chromosome and chromatid:
Solution
A chromosome is an organized structure of DNA and protein found in cells. It is a single
piece of coiled DNA containing many genes, regulatory elements and other nucleotide
sequences whereas a chromatid is one of the two copies of DNA making up a duplicated
chromosome, which are joined at their centromeres, for the process of cell division (mitosis
or meiosis).
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Polytene chromosomes are found in _________ of fly larvae.
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Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
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