आज का इतिहास: क्लोनिंग के जरिए 'डॉली' का जन्म

<p style="text-align: justify;"><strong>नई दिल्लीः</strong> इतिहास में 22 फरवरी की तारीख एक बड़ी घटना के साथ दर्ज है. 22 फरवरी 1997 वह दिन था, जब स्कॉटलैंड के रोसलिन संस्थान में शोधकर्ताओं की एक टीम ने ऐलान किया कि उन्हें पहली बार किसी स्तनधारी जीव से निकाली गई कोशिका से 'क्लोन'

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