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ElenaW [278]
3 years ago
13

How do you use a punnet square?

Biology
1 answer:
viva [34]3 years ago
4 0
Depending on how many genes you are comparing, punnet squares will be of different sizes. Let's just say you are dealing with a monohybrid crossing. The allels you are comparing is B:brown eyes and b:blue eyes.  For example, the female's genotype is  Bb (which means she has brown eyes) and let's say your male's genotype is Bb as well. Draw a 3x3 square: the two squares in the first column will each have one allel and same goes for the first row. I'll insert an example.
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