Lampbrush chromosomes are visible in:

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(A) Lampbrush chromosomes are a special type of chromosome found in the oocytes of most vertebrates (except mammals) and some invertebrates. They are

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Diplotene of meiosis

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(A) Lampbrush chromosomes are a special type of chromosome found in the oocytes of most vertebrates (except mammals) and some invertebrates. They are highly extended and are most clearly visible during the $diplotene$ stage of $prophase-I$ of meiosis. During this stage,the chromosomes exhibit a characteristic 'lampbrush' appearance due to the presence of lateral loops that are sites of active transcription.

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