Incomplete Dominance and Codominance – A Quick Tutorial

A quick tutorial on Incomplete dominance and codominance.
Video Rating: 4 / 5

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Comments ( 25 )
  1. MMTheBestest
    December 11, 2012 at 2:59 am

    Thanks for the lesson!

  2. kendevy sayson
    December 11, 2012 at 3:34 am

    thank you sooo much!! you’ve just expalined it well. its a really great help especially i’m having a demonstration in our class :))

  3. Yellow24y
    December 11, 2012 at 4:32 am


  4. Ignacio Trejo
    December 11, 2012 at 5:08 am

    good help yes i got it now

  5. XxHorseyHodgettsxX
    December 11, 2012 at 5:51 am

    *Down – dam auto correct!

  6. XxHorseyHodgettsxX
    December 11, 2012 at 6:14 am

    Thanks! You really simplified it form :)

  7. collegeofcatch
    December 11, 2012 at 7:11 am

    Excellent video! Thank you do much. Very clear.

  8. DEdens1525
    December 11, 2012 at 7:50 am

    Very informative, I just wish you could read the writing a bit better.

  9. pisgahscience
    December 11, 2012 at 8:48 am

    True. I did sacrifice time for quality 😉 Thanks for watching all the same!

  10. larryxillest
    December 11, 2012 at 9:03 am

    contrary to the first seconds of the video, this is most definitely Biology in 8 minutes.

  11. 3ntomology
    December 11, 2012 at 9:08 am

    thanks, I needed a good way to differentiate incomplete and codominant alleles for my exam. The subscripts work well, thanks!

  12. pisgahscience
    December 11, 2012 at 9:58 am

    GOOD!  Glad I could help :)

  13. koocooman
    December 11, 2012 at 10:48 am

    Thank you so much. You cleared up ALL my questions and I’m probably going to ace the exam because of you

  14. SSJChad
    December 11, 2012 at 11:14 am

    George Lucas?

  15. shana51341
    December 11, 2012 at 12:10 pm

    This was so clear. Thank you.

  16. pisgahscience
    December 11, 2012 at 1:03 pm

    I’m sure different teachers demonstrate this differently. The basics of the problem still work. In other words, the letters you used work just fine and you will get the same phenotypic ratio. However, the problem comes with using rr. Technically incomplete dominance both red and white are BOTH dominant and there is no recessive trait. Since we use lower case letters for recessive traits, I don’t like using them for a non-recessive trait. Make sense?

  17. fghjkl27332
    December 11, 2012 at 1:26 pm

    aren’t you supposed to use the same letter like for red flowers RR, for white flowers rr, and for pink flowers Rr

  18. SplitSniper7
    December 11, 2012 at 2:22 pm

    Thank you so much! This helps me understand things so much better!

  19. MLuckTV
    December 11, 2012 at 2:58 pm

    or u could say green (50%) is 2/4. usually ur genotype will be out of four. so 2/4 is 50 percent and 1/4 is 25% and 3/4 is 75% and 4/4 is 100%. think of it like quarters ^_^

  20. 0zero0zero
    December 11, 2012 at 3:15 pm

    thanks, rlly easy to understand.

  21. Adriana Santiago
    December 11, 2012 at 3:38 pm

    not sure if this helped….

  22. DeiCinema
    December 11, 2012 at 3:40 pm

    How can I pay attention to the lesson when there is a video of baby with 3 arms on the related vids?

  23. pisgahscience
    December 11, 2012 at 4:29 pm

    It is a common mistake and LOTS of teachers actually get is backwards. For further information try: h t t p : / / w w w .

  24. pisgahscience
    December 11, 2012 at 5:25 pm

    That is what is says on the screen.
    25% Blue (which is 1/4)
    50% green (which is 1/2)
    25% yellow (which is 1/4)

  25. pisgahscience
    December 11, 2012 at 6:18 pm

    Fractions, percents, and decimals are all the same thing. .5 is 1/2 is 50%. There is no difference in any of those.

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