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shenandoah123 Group Title

when gregor mendel crossed true-breeding tall plants with true-breeding short plants, why was it impossible to observe segregation?

  • one year ago
  • one year ago

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  1. thomaster Group Title
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    because all offspring plants would be the trait that is dominant

    • one year ago
  2. MarcLeclair Group Title
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    Because there was only one trait observed. So he was observing tall ( S ) and short (s) therefore the allele observed would not follow the segregation law which states that every allele segregates independently at meiosis I. So when he did it with 2 alleles ( lets say color in this case ) he got SsYy and they all segregated independently. Therefore giving every possibilities of offspring

    • one year ago
  3. thomaster Group Title
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    lets say tall is dominant and short is recessive. You would cross TT with tt the offspring would be only Tt which means that all plants will be tall.

    • one year ago
  4. shenandoah123 Group Title
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    ok a

    • one year ago
  5. shenandoah123 Group Title
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    A) alleles for height do not segregate in the F2 B) alleles segregate only in the F2 generation C ) alleles segregate best when two tall plants are crossed D) alleles in the F1 must be Tt to have height variety in the F2

    • one year ago
  6. MarcLeclair Group Title
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    As thomaster explained it (I used a different definition I believe) the answer would be b

    • one year ago
  7. MarcLeclair Group Title
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    I could be wrong ^^ if so I apologize haha

    • one year ago
  8. thomaster Group Title
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    B and D are correct i think

    • one year ago
  9. shenandoah123 Group Title
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    d

    • one year ago
  10. thomaster Group Title
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    with TT x tt every offspring will be Tt so B is true but if the alleles in F1 are Tt you would have height variety in F2 So they're both correct

    • one year ago
  11. thomaster Group Title
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    But i'd take D as answer

    • one year ago
  12. shenandoah123 Group Title
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    ok thanks

    • one year ago
  13. JTfan2000 Group Title
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    Agreed with B

    • 2 months ago
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