I'm wondering how you do this
Tt,Tt,Tt x tt,tt,tt
in a punnet square.
Thanks:)
http://www.changbioscience.com/genetics/punnett.html
for the example square, use genotype at the last choice (3 types) x 3types, press go.
To create a Punnett square for the cross you mentioned, which is between Tt,Tt,Tt and tt,tt,tt, follow these steps:
1. Write out the genotype for each parent. In this case, the first parent has the genotype Tt,Tt,Tt, and the second parent has the genotype tt,tt,tt.
2. Break down each parent's genotype into its individual alleles. The letter "T" represents one allele for a specific trait, while the letter "t" represents a different allele for the same trait. So, the first parent can contribute either a "T" or a "t" allele, while the second parent will only contribute a "t" allele.
3. Create a Punnett square by drawing a box divided into four equal sections.
T t
----------------
T | Tt | Tt |
----------------
t | Tt | Tt |
----------------
4. Place the alleles from the first parent along the top of the square and the alleles from the second parent along the left side.
5. Combine each allele from the top row with each allele from the left column to fill in the remaining squares. In this case, both parents have the same genotype, so all four squares will contain the same genotype combination: Tt.
Therefore, the Punnett square for the cross between Tt,Tt,Tt and tt,tt,tt would result in all offspring having the genotype Tt.