what is genetics help!

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Jetkon

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#1 Jetkon
Member since 2006 • 301 Posts
so a heterozygous plant Aa self polinates

probability it's aa = (1/2)(1/2) = 1/4
probability it's either AA or Aa = 1 - 1/4 = 3/4
so 3 are dominant 1 is recessive

how can i use this type of math to do a problem like CCii x ccII.  i'm not allowed to use punnet squres only math.  squares take too long
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Crucifier

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#2 Crucifier
Member since 2002 • 7195 Posts
didnt they teach you that in class?
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Caffeine_Trip

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#3 Caffeine_Trip
Member since 2006 • 3390 Posts
I never paid attention in Biology class, I've heard of that stuff though.
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Dark__Link

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#4 Dark__Link
Member since 2003 • 32653 Posts
Take a differential calculus course. They teach you all about genetics.
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Jetkon

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#5 Jetkon
Member since 2006 • 301 Posts
didnt they teach you that in class?Crucifier


none! they give he teaches us basic concepts like segregation, all theory and textual.  you do all the math and statistics problem on your own.  we're "supposed" to figure it out in our "own time." i think the teacher is so bad at math he's scared to do any problems infront of the board.


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Crucifier

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#6 Crucifier
Member since 2002 • 7195 Posts
do you have any kind of answer key to check your answers?  you could do some trial and error if so..
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Renegade_Fury

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#7 Renegade_Fury
Member since 2003 • 21757 Posts
Make a punnet square anyway and just say you didn't.
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CodingGenius

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#8 CodingGenius
Member since 2004 • 8118 Posts
i'm not allowed to use punnet squres only math. squares take too long
Jetkon


Are you not allowed to use squares, or are you avoiding them because they "take too long"? I recommend checking out this link from Wikipedia to explain them, because they really are quick. If not, meet with a smart friend afterschool and have them explain it to you.