In peas,tall plants are dominant to short plants. Complete a punnet square to show the genotypes and phenotypes expected for the following cross: heterozygous tall x heterozygous tall.
To set up a Punnett square for this cross, we first need to determine the genotypes of the parents:
Heterozygous tall plant: Tt
Heterozygous tall plant: Tt
Now, we can create a 2x2 Punnett square to show all possible combinations of alleles:
| | T | t |
|------|----------|---------|
| T | TT | Tt |
| t | Tt | tt |
From the Punnett square, we can see that there are 25% chance of getting a homozygous dominant tall plant (TT), 50% chance of getting a heterozygous tall plant (Tt), and 25% chance of getting a homozygous recessive short plant (tt).