Reading Punnett Squares!

At first, I thought Punnett Squares were extremely confusing and hard to understand. Little by little, I finally understood the concept. For example, In class, we made a Punnett Square for the possibilities of varieties of colors for an egg.

Example:

B: blue-dominant
b: green-recessive

~If there was a combination of B+b, then it would be dominant (blue) because upper case is dominant.

~It there was a combination of b+b, then it would be recessive (green) because lower case plus lower case stays the same.

~If there was a combination of B+B, then it would be dominant (blue) because upper case plus upper case stays the same.

Lets say there was a Punnett Square that came to a conclusion of PP, PP, PP, and PP.

P: pink
p: purple


The Phenotype would be: A 100% pink egg

The Genotype would be: 100% PP

In my opinion, I think that Punnett Squares are very useful, especially if you want to become a scientist or are a scientist. They really work! You can even predict the color hair your baby will have! They take you step by step, and you will finally recieve a conclusion.


*Punnett Square: A chart which predicts all possible gene combinations in a cross of parent genes.

*Reginald Punnett was the creator of the Punnett Square.

*Each trait is controlled by two genes


If you want to learn more about Punnett Squares, go to:

http://www.usoe.k12.ut.us/CURR/Science/sciber00/7th/genetics/sciber/punnett.htm

Want to calculate your own Punnett Square? Here's the site:

http://www.changbioscience.com/genetics/punnett.html