Question

Having Some Trouble Need Help!

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

what are you having problems with? Do you remember how to set up a dihybrid cross?

Answer 2

Like a punnet square right?
Something like RrRR right?

Answer 3

right, in this case it will be PpTT on the left and ppTt on top

Answer 4

Yes that's a part I know how to do. I just dont understand how to do the likelyhood of the phenotype/genotype

Answer 5

You look at how many of each genotype are in the square and then make it in to a ratio

Answer 6

Can you give an example I can take it from there I just need to know what i'm working with then i should be fine.

Answer 7

@agreene