Punnett Squares

   Punnett squares are used to solve genetic cases. If you were to draw one just draw a square, then split it in to sections. In the end you will have a square with four other squares in side it. Take the two alleles for one trait from one parent and either put it on the top or right side. Take the other two alleles from the other parent for the same gene and putit on the top or right side, whichever one you didn't put the first genes on. Remember these go on the outside of the bigger box. Then take the gene on the top(only the allele in the row you are working on) and place it in the first box. Look at the right side of the box and take thet allele to place it in the box. Do that with every allele and every box. Then comes some terms you should know to get a better answer. Homozygous means that it has the same letter like tt or TT. It also means that the child or offspring will be pureblood. Heterozygous means that you have two different traits like Tt.