📊 Biology
Q. Which among the given events occurred first -
  • (A) World's 1st test tube baby Louise Brown was born in U.K.
  • (B) World's 1st human heart transplant was performed by Dr. Christian Barnard
  • (C) Yuri Gagarin became the 1st man in space
  • (D) DNA structure of genes was discovered by James D Watson & Francis Crick
✅ Correct Answer: (D) DNA structure of genes was discovered by James D Watson & Francis Crick

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Ram Sharma
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