Question

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 × ppTt and answer the following in complete sentences.
Describe how you would set up a Punnett square for this cross.
List the likelihood of each possible offspring genotype.
List the likelihood of each possible offspring phenotype.

Answer 1

I don't want someone telling me the answer I just want someone to explain how I would do this.

Answer 2

Alrighty. First, do you know how to set up a Punnett Square?

Answer 3

It looks like this (attached). Try drawing one.

Answer 4

Here, we're finding possible outcomes based on the alleles given. Each Punnett Square is good for predicting only one type of allelle, though.
For the square, we 'distribute' the allelles evenly in the boxes as such: