pak mcqs pk

– by 0
  • Short-term fluctuations in temperature, cloud cover, wind and precipitation
  • It prevails over periods of hrs or days
  • Overall patterns of weather that prevail from year to year

  • Both a and b

    • – by 0
  • Chromosomes 1st observed by walther Fleming
  • Chromosomal theory of inheritance 1st formulated by Walter Sutton

  • 1st evidence of hereditary nature of DNA provided by Friedrich Meischer

  • Sex chromosomes discovered by Thomas Hunt Morgan