Genetics: Trihybrid Cross: The Forked Line Method
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Uploaded by DNAunion on Jan 30, 2010
Shows how to solve trihybrid (and by extension, higher-order) crosses using the forked line, or branch diagram, method.
The music is Maynard Ferguson's cover of "Baker Street," off of his "Carnival" album.
Uploader Comments (DNAunion)
All Comments (36)
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How Did you get 16 for the denominator? Should it be 64? Im CONFUSED
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Thank you so much for this video and such a clear explanation.
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You just save my life. Thank u sooooooOOOOOOOOO much!
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you made my life so much easier!!! i hate genetics but you really made it less complicated! i wanna see more stuff abt fruit flies and all...thanks ALOT!!!
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@seifer128 Multiply the probabilities. So say the frequency of a genotype for one gene is 3/4 and another genotype for another gene is 1/2. The frequency of BOTH occurring in one organism is 3/8.
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God bless you
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how will i know if that there is 27/64 9/64 9/64 9/64 3/64 3/64 3/64 1/64? please explain it further..
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Helped with my AP Biology homework. Thanks.
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i want to make sweet love to you for this
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The very end result shows the genotypes with their frequencies, and the rest of the video explains how to get that result.
DNAunion 2 months ago
what happens if i have
AA x aa ?? dont you get all Aa , how would you set that up???
1Aa?
or like aaxaa? is that even possible...
hellokittydimaggio 1 year ago
@hellokittydimaggio
That's a simple monohybrid cross between two pure-breeding lines. That's too basic for the videos I have made. Also, since you are a beginner at genetics, you might want to use a Punnett square. You can search for those terms (monohybrid and/or Punnett) for videos.
DNAunion 1 year ago
this video looks really helpful and I would like to watch it all but it keeps stopping..
lainemichelleallen 1 year ago
@lainemichelleallen
I just watched it all the way through and it worked fine. Your Internet connection may have acted up while you were trying to watch it.
DNAunion 1 year ago