๐Ÿ“ข Too many exams? Donโ€™t know which one suits you best? Book Your Free Expert ๐Ÿ‘‰ call Now!

  • google app store apple app store
  • โœ–

      Question

      In a breeding experiment involving quantitative traits,

      a breeder calculated the phenotypic variance (VP) as 40 and genotypic variance (VG) as 30. Based on these values, what is the correct estimate of broad-sense heritability and what does it imply about trait inheritance?
      A 50%; low environmental effect Correct Answer Incorrect Answer
      B 75%; high genetic control Correct Answer Incorrect Answer
      C 25%; strong environmental influence Correct Answer Incorrect Answer
      D 100%; no environmental variance Correct Answer Incorrect Answer
      E 60%; moderate genetic control Correct Answer Incorrect Answer

      Solution

      Broad-sense heritability (Hยฒ) is calculated as: Hยฒ = VG / VP = 30 / 40 = 0.75 or 75%. This indicates that 75% of the phenotypic variance is due to genetic factors, implying high genetic control and suggesting that the trait is largely heritable, making selection more effective. ย 

      Practice Next
      ask-question