In pea plants, purple flowers (p) are dominant over white flowers (p) and tall stems (t) are dominant over short stems (t). complete a dihybrid cross for parents with the genotypes: pptt x pptt and answer the following in complete sentences. (5 points)

1. describe how you would set up a punnett square for this cross.

2. list the likelihood of each possible offspring genotype.

3. list the likelihood of each possible offspring phenotype.

1. The Punnett square would look like this
     |    PT    |    PT    |    pT    |    pT    |
pT | PpTT   |  PpTT  |  ppTT |   ppTT |
pt  | PpTT   |  PpTt   |  ppTt   |  ppTt   |
pT | PpTT   |  PpTT  |  ppTT |  ppTT  |
pt  | PpTt    |  PpTt    |  ppTt  |   ppTt  |

2. Looking at the results, there are:
PpTT - 5 [5/16 chance]
PpTt - 3 [3/16 chance]
ppTT - 4 [4/16 or 1/4 chance]
ppTt - 4 [4/16 or 1/4 change]

3. The possible phenotype are:
Purple and Tall - 8 [8/16 or 1/2 chance]
White and Tall - 8 [8/16 or 1/2 chance]
Purple and Short - 0 [0 chance]
White and Short - 0 [0 chance]