Faster way to find genotypes without doing a punnet square
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Faster way to find genotypes without doing a punnet square
i have this simple question
the mating between Aa Bb Cc Dd x Aa Bb Cc Dd
Is there a faster way to answer this question without doing a punnet square
the mating between Aa Bb Cc Dd x Aa Bb Cc Dd
Is there a faster way to answer this question without doing a punnet square

 Garter
 Posts: 3
 Joined: Wed Sep 13, 2006 1:16 am
You can find some mathematical proportions (some say they are the "proportion rules") for that, but they all come from punnet square, so I advise you to do it yourself and find those proportions yourself, then you can use them as a rule.
Here is a site for you to check yourself:
http://www.changbioscience.com/genetics/punnett.html
Good luck.
Here is a site for you to check yourself:
http://www.changbioscience.com/genetics/punnett.html
Good luck.
It matters not how strait the gate
How charged with punishment the scroll
I am the Master of my fate
I am the Captain of my soul.
How charged with punishment the scroll
I am the Master of my fate
I am the Captain of my soul.
if you search for some of my replies in genetics about genetics, you'll see another method in calculating genotype frequencies.
Assume the chance of every gamete is 1/2 to get passed on to the progeny.
Thus fro example: AaBbCc X AABBCc
> for the left combination if you want to calculate the probability of passing abc than passing on a = 1/2, so are those of b and c > combined probability = 1/2 * 1/2 * 1/2 = 1/8
> right passes on ABc and thus the probability is 1 * 1 * 1/2 = 1/2
thus the genotype frequency of AaBbcc = 1/8 * 1/2 = 1/16.
Assume the chance of every gamete is 1/2 to get passed on to the progeny.
Thus fro example: AaBbCc X AABBCc
> for the left combination if you want to calculate the probability of passing abc than passing on a = 1/2, so are those of b and c > combined probability = 1/2 * 1/2 * 1/2 = 1/8
> right passes on ABc and thus the probability is 1 * 1 * 1/2 = 1/2
thus the genotype frequency of AaBbcc = 1/8 * 1/2 = 1/16.
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